Your Brain, Your Identity, and the Hidden Origins of Self-Esteem

by Jeffrey R. DeSarbo, DO

Who are you?

At first glance, it seems like one of the easiest questions imaginable. Yet after more than three decades of practicing psychiatry, I have come to believe it is one of the most difficult questions any of us will ever answer.

Years ago, after reading Eckhart Tolle's A New Earth, I became fascinated by the depth hidden within that deceptively simple question. Since then, I have asked it to countless patients in my office. What continues to amaze me is not that people struggle to answer it, but how they answer it, nine out of ten times: "I'm a teacher," "I'm a lawyer," "I'm a mother," "I'm an accountant." Occasionally, someone simply tells me their name and where they grew up.

I usually smile and ask another question: "If you weren’t specifically those things, would you no longer be you?" "If your parents had chosen a different name when you were born, would you somehow be a different person?" The room almost always becomes quiet in contemplation.

It isn't because the question is difficult intellectually. The people sitting across from me are thoughtful, insightful, and highly intelligent. Rather, I think many of us have spent our lives describing ourselves by our roles instead of understanding our identity. Occupations, relationships, accomplishments, social status, and titles certainly become important parts of our story, but they are not the story itself.

In fewer than 10 percent of these talks, someone responds very differently. Instead of giving me a title or describing what they do for a living, they might say, "I love nature and children. I'm naturally curious and enjoy learning new things. I like making people smile and laugh. I enjoy painting my abstract thoughts about life and the universe. I struggle with judgmental or intolerant people, and I try to take life one day at a time."

When I hear an answer like that, I know we've moved beyond labels and roles. These are not descriptions of a profession, a résumé, or a list of accomplishments. They are insightful descriptions of character, values, passions, temperament, and the qualities that make someone uniquely them. Whether one chooses to call it the self, the authentic person, or even the soul, this is the essence of identity. It exists independent of a person's name, occupation, achievements, or social status.

Self-Esteem and Self-Confidence

Over the years, I have gradually come to believe that many of the struggles we label as problems of self-esteem or self-confidence are actually symptoms of something deeper. They are often the visible consequences of an unclear sense of identity. If I don't truly know who I am, it becomes remarkably easy to look outside myself for the answer. I begin defining myself by my profession, my accomplishments, my appearance, my relationships, my income, or the approval of other people. Those things certainly influence my life, but they were never designed to become the foundation of my identity.

Perhaps that is why so many people work tirelessly to improve their confidence while continuing to feel insecure. They are trying to strengthen the walls of a house whose foundation remains unstable.

One of the greatest misconceptions about self-esteem and self-confidence is that they are primarily problems of adolescence. We picture teenagers struggling to fit in, college students trying to discover themselves, or young adults wondering whether they belong. We assume that somewhere along the road to adulthood, these insecurities gradually disappear.

My experience has been quite different. A high school student wonders if they are smart enough to get into college. A college graduate questions whether they chose the right profession. A newly married couple quietly compares their relationship with everyone else's. A parent lies awake, wondering if they are raising their children well. An executive questions whether they truly deserved the promotion they just received. A retiree wonders who they are without the career that defined so much of their life. Different ages. Different circumstances. Remarkably similar questions.

"Am I enough?"

Although those words are seldom spoken aloud, they quietly echo through the minds of far more people than we realize.

I think it is important to normalize that experience. Feeling inadequate from time to time does not necessarily mean there is something wrong with you. It means you are human. The brain is designed to evaluate, compare, question, and learn. Those processes have served our species well for thousands of years. Problems arise, however, when comparison becomes chronic, identity becomes externally defined, and our sense of worth becomes increasingly dependent upon factors we cannot completely control. In many ways, I believe we are asking our brains to function in a world they were never designed to navigate.

When I was growing up during the 1970s and early 1980s, comparison certainly existed, but our world was much smaller. My parents had relatively simple hopes for me. They wanted me to become a responsible adult who could support himself, contribute to society, and build a meaningful life. Those were my expectations as well.

I never imagined becoming a physician. The world at that time was about business and Wall Street. So, I followed a path in finance because it seemed that society was telling me to do that.

I certainly didn't envision writing books, traveling the world, or speaking to thousands of people internationally. Those opportunities developed gradually over time, naturally, often in ways I never could have predicted, yet still with the intentionality of pursuing what meant something to me.

What I learned after a brief stint in the business sector was that I wanted to do something much simpler: help people.

I was always fascinated with science, so medicine eventually became the avenue through which I pursued that purpose. But had I never been accepted into medical school, I genuinely believe I would have found another path to help others. Looking back, I think that distinction became one of the healthiest aspects of my own development. My identity was never dependent upon becoming a physician. Becoming a physician simply became one expression of the person I hoped to become.

A New Earth of Comparisons

Today, I sometimes wonder whether many young people, and many adults as well, are growing up under a very different set of expectations. Success is no longer experienced quietly. It is displayed, measured, ranked, broadcast, and compared every single day.

When I was growing up, if someone in another state had a larger home, a faster car, a more successful career, or a more exciting vacation, I rarely knew about it. My comparison group consisted primarily of peers: classmates, neighbors, teammates, relatives, and perhaps a few people I admired from afar. Today, a teenager compares themselves to the most attractive influencer in California, the richest entrepreneur in Dubai, the fittest athlete in Australia, the young concert pianist in Japan, and the smartest student posting on TikTok, all before breakfast.

Adults do exactly the same thing. Without realizing it, social media has quietly expanded everyone's comparison group from dozens of people to hundreds of millions. Our brains, however, have not evolved at the same pace.

Many of the images and stories we consume each day are carefully curated rather than completely authentic. Photographs are filtered, photoshopped, or digitally enhanced. Accomplishments are highlighted while failures remain hidden. Vacations become lifestyles. A brief moment of success becomes someone's perceived everyday reality. Entire identities can be carefully constructed for public consumption. Sometimes what we compare ourselves to is not merely incomplete; it is embellished, modified, exaggerated, or, at times, entirely fictitious. Yet our brains often respond as though every image represents reality.

Consequences Beyond Scrolling

Parents, spouses, bosses, coaches, teachers, and others who shape our development are exposed to the same carefully curated stories that we, as individuals, are. Without intending to, they can begin adopting those unrealistic standards themselves. A parent compares their child to the student who appears to earn perfect grades, excel in athletics, and maintain a seemingly perfect social life. A coach expects young athletes to perform like professionals. A supervisor unconsciously measures employees against unrealistic stories of extraordinary productivity. Couples begin evaluating healthy relationships against carefully staged moments of excitement and romance posted online.

Slowly, unrealistic expectations become contagious. The interpretation of one’s life as “less than” begins to set in, along with sadness and depression.

Comparison spreads from person to person until entire families, classrooms, workplaces, and communities begin measuring real human beings against artificial standards that no one could consistently meet. Perhaps it should not surprise us that anxiety, perfectionism, imposter syndrome, and fragile self-esteem have become increasingly common.

Neurologically, It Makes Sense

The human brain evolved within relatively small social groups where acceptance often meant survival. Long before there were smartphones or social media, our ancestors depended upon one another for protection, food, and community. As a result, the brain developed sophisticated systems devoted to monitoring our place within the group.

Regions such as the brain’s medial prefrontal cortex help construct our ongoing sense of self, while our anterior cingulate cortex constantly evaluates social conflict, mistakes, and perceived rejection. Interestingly, this region often responds to emotional pain in ways strikingly similar to physical pain, reminding us that social acceptance has always mattered deeply to our human brain. The amygdala assigns emotional significance to criticism, embarrassment, or exclusion, making those experiences especially memorable. Meanwhile, the hippocampus stores emotionally meaningful events and gradually weaves them into the autobiographical story we tell ourselves about who we are.

Collectively, these brain systems helped our ancestors survive. The problem is that they evolved for villages and not viral videos. They evolved for communities of dozens, not audiences of millions. Today, our brains continue doing exactly what evolution designed them to do: compare, evaluate, and search for our place within the social world. The difference is that the social world has expanded beyond anything evolution could have anticipated.

When comparison becomes constant, inadequacy can begin to feel constant as well. And if we repeatedly define ourselves by those comparisons, our identity slowly begins shifting away from who we truly are and toward who we believe the world expects us to become.

I believe that is where the real erosion begins. Not simply the erosion of confidence. Not simply the erosion of self-esteem. But the gradual erosion of identity itself. And when identity begins to erode, self-esteem and self-confidence are often the first casualties.

If this growing crisis of identity has neurological underpinnings, and I believe it does, then understanding the brain may help us understand why so many otherwise capable people continue to struggle with self-esteem and self-confidence despite objective evidence of their abilities. Modern neuroscience helps explain why this process is so powerful. The brain is not simply a passive recorder of our experiences, it is an active storyteller, continually constructing and updating our sense of who we are. Networks within the brain, particularly the default mode network, integrate our memories, relationships, successes, disappointments, and life experiences into an ongoing autobiographical narrative. Over time, this "story of self" becomes our identity. 

The challenge is that the brain builds this narrative from the information we repeatedly provide it. If our lives become dominated by comparison, criticism, unrealistic expectations, or the belief that our worth depends upon achievement, those messages gradually become woven into the story we tell ourselves. Eventually, these beliefs feel less like opinions and more like facts, quietly shaping our self-esteem, our confidence, and the way we interpret the world around us.

This helps explain one of the greatest paradoxes I encounter in clinical practice. Some of the most accomplished individuals I have ever met continue to feel inadequate despite overwhelming evidence to the contrary. Their résumés tell one story, while their internal narrative tells another. Promotions, awards, degrees, financial success, and public recognition may temporarily quiet the self-doubt, but they rarely eliminate it because the underlying story about who they believe themselves to be has never truly changed.

This is one reason imposter syndrome has become such an important concept in psychology. Although it is often discussed as though it were limited to exceptionally successful people, I believe it exists on a much broader continuum. Many students quietly wonder whether they truly deserve their grades. Young professionals question whether they belong in their new positions. Parents compare themselves to impossible standards and wonder if everyone else somehow received an instruction manual they missed. Even individuals who have spent decades mastering their profession may privately fear that one mistake will expose them as less competent than others believe them to be.

Over the years, I have begun wondering whether imposter syndrome sometimes has less to do with competence than with identity. That statement may sound surprising, but consider how often we pursue goals that originated outside of ourselves. Some of us strive to meet our parents' expectations. Others seek approval from teachers, coaches, supervisors, or peers. Many spend years trying to meet society's ever-changing definition of success. In today's world, that definition is often amplified by social media, where extraordinary accomplishments are presented as though they were ordinary and where every achievement seems to require an even greater one.

The problem with living according to someone else's definition of success is that we eventually begin performing a role rather than expressing our authentic selves. Even if we become highly successful in that role, a quiet part of us may continue wondering whether we truly belong there. After all, if we are pursuing a life built primarily upon external expectations, who is actually receiving the applause? The role or the person beneath it?

I sometimes wonder how many people spend years pursuing lives that look successful from the outside while quietly feeling disconnected from themselves on the inside. They may excel professionally, earn the admiration of others, and accomplish remarkable things, yet still experience a persistent sense that something is missing. Rather than asking whether they have achieved enough, perhaps the more important question is whether they have been living in a manner consistent with who they truly are.

This brings me back to the question I ask patients in my office: “Who are you?” Not, “what do you do?” Not, “what degrees have you earned?” Not, “how much money do you make?” Not, “how many people follow you online?"

The longer I practice psychiatry, the more convinced I become that this question lies at the heart of far more emotional suffering than we often recognize. It is also one of the very few questions that no one else can answer for us. Family can influence us. Friends can encourage us. Society can label us. Even neuroscience can help explain how our brains construct our sense of self. But ultimately, discovering our identity remains deeply personal. It cannot be outsourced to social media, our profession, our achievements, or the opinions of other people.

Perhaps that is where genuine self-esteem begins, not with convincing ourselves that we are extraordinary, but with gradually becoming reacquainted with the person we already are beneath the labels, beneath the comparisons, and beneath the expectations that the world has placed upon us.

If identity lies at the foundation of self-esteem, an obvious question follows. Can identity change? I believe the answer is yes, but perhaps not in the way many people imagine.

For years, self-help literature has encouraged us to "reinvent ourselves," "become someone new," or "create the life we want." While there is certainly value in personal growth, I have gradually come to believe that many people are not searching for a new identity at all. Instead, they are trying to rediscover an authentic one that has become buried beneath years of expectations, responsibilities, disappointments, and comparisons.

As children, many of us possess a natural curiosity about the world. We are willing to ask questions, explore new ideas, fail repeatedly, and begin again without assuming those failures define us. Somewhere along the journey into adulthood, that curiosity often becomes replaced by evaluation. We begin worrying about how we appear, whether we measure up, whether others approve, and whether our accomplishments are sufficient. Without realizing it, we slowly shift from experiencing life to performing life.

The Brain Adapts to Shifts

One of the remarkable characteristics of the human brain is its lifelong capacity for neuroplasticity. Although the basic architecture of the brain is established early in life, the connections within that architecture continue changing throughout adulthood. Every meaningful experience, every relationship, every challenge, every skill we develop, and every new perspective has the potential to strengthen some neural pathways while allowing others to gradually weaken. We often think of neuroplasticity as something that helps us recover from injury or learn a new language, but it also plays an important role in shaping identity itself.

Each experience quietly asks the brain a question: "What does this tell us about who we are?" If I repeatedly avoid challenges because I fear failure, my brain begins to incorporate avoidance into my identity. If I repeatedly seek approval before making decisions, the brain learns that my worth depends upon external validation. If I continually compare myself to impossible standards, the brain gradually comes to expect that I will never quite measure up.

Fortunately, the opposite is also true. When we begin making choices consistent with our own values rather than someone else's expectations, the brain processes new information. Slowly, it updates its internal narrative. The process is rarely dramatic. It is usually gradual, unfolding one meaningful experience at a time.

This is where I believe the concept of a bucket list takes on a very different meaning than most people imagine. When many people hear the words bucket list, they think of skydiving, climbing mountains, traveling to exotic countries, or accomplishing spectacular goals before they die. There is certainly nothing wrong with those experiences, but I have never believed that they represent the true purpose of a bucket list. A meaningful bucket list is not a competition. It is not a résumé. It is not another scorecard by which we prove our worth. At its best, it is a process of discovering ourselves through intentional living. Every meaningful experience becomes another opportunity to ask, "What does this teach me about who I am?" Sometimes the answer comes while standing on a mountaintop. Sometimes it comes while sitting quietly with a grandchild. Sometimes it comes through volunteering, learning a musical instrument, writing a letter of forgiveness, exploring another culture, or finally finding the courage to say no to something that no longer reflects our values.

The experience itself is rarely the point. The person we become through the experience is. One of the greatest gifts of living intentionally is that it gradually shifts our attention away from proving ourselves and toward understanding ourselves. Instead of asking, "Will this make me look successful?" we begin asking, "Is this consistent with the person I want to become?" That subtle change has profound psychological consequences because it moves our motivation from external validation toward internal purpose.

Perhaps this is why individuals who pursue lives that are deeply aligned with their values often appear more comfortable in their own skin. They still experience disappointment. They still make mistakes. They still question themselves from time to time. But those moments no longer threaten their entire identity because it is no longer built exclusively on performance.

Confidence Can Change As Well

Over the years, I have come to see confidence not as the belief that we will always succeed, but as the willingness to continue moving forward despite uncertainty. Genuine confidence develops through experience. It grows each time we confront a challenge, learn from failure, and discover that we are more resilient than we imagined. Healthy self-esteem, however, serves a different function. It reminds us that our value remains intact regardless of the outcome.

That distinction is critical. Confidence says, "I believe I can do this." Self-esteem says, "Even if I cannot, I still have worth." One depends largely upon competence. The other depends upon identity.

As I have reflected on these ideas over the years, I have become increasingly convinced that many of the emotional struggles we encounter are not signs that we are broken. Rather, they may be invitations to ask deeper questions about the stories we have been telling ourselves: Whose expectations have I been living? Whose definition of success have I adopted? What parts of my identity genuinely belong to me, and what parts have been borrowed from parents, teachers, coaches, employers, social media, or society itself?

These are not easy questions. They may take years to answer. But I believe they are among the most important questions we can ask because they move us away from simply managing symptoms and toward understanding their origins.

I often return to the same conversation with patients. Who are you? Only you can answer that question.

Not because others have nothing valuable to say, but because identity is ultimately an inside job. It emerges from the intersection of your values, character, experiences, relationships, hopes, and the meaning you assign to your life. It is discovered through honest reflection and intentional living, not through comparison.

Perhaps that is why I continue asking patients this question after all these years. It is not because I expect an immediate answer. It is because I believe the search itself has tremendous value.

As our understanding of ourselves becomes clearer, something remarkable often begins to happen. Self-esteem no longer depends quite so heavily upon achievement. Confidence no longer requires perfection. The need to compare ourselves with everyone else gradually loses its grip because we are no longer trying to become someone else. We are becoming more fully ourselves.

The brain, after all, spends a lifetime trying to answer one fundamental question: Who am I?

The answer will never be found entirely in a profession, a title, a social media profile, or another person's expectations. Those things may describe parts of our lives, but they can never define the whole person. Perhaps that is the hidden origin of healthy self-esteem. It begins when we stop asking the world to tell us who we are and begin discovering the person who has been there all along.

Dr. Jeffrey DeSarbo, is a neuropsychiatrist and author of The Neuroscience of a Bucket List: Getting the Most from Your Brain and Life. In addition to being a frequent guest on various media shows and lecturing internationally, he has a practice in Garden City, New York where he works with a variety of patients to achieve optimal mental health.

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