Your Personality Is a Trance:How Hypnosis Rewires the Self

You walk around with a story about who you are—how you react under pressure, what makes you angry, what you're capable of, where your limits sit. Most people treat that story as fixed architecture, as real and immutable as the skeleton inside your skin. But a Stanford psychiatrist who has worked with thousands of patients over five decades sees something else entirely: your personality is what Dr. David Spiegel calls "a convenient assumption," a construction your brain assembles to simplify experience. Hypnosis, he argues, reveals this truth in real time. In a single session, who you believe yourself to be can shift completely—not through positive thinking or willpower, but through a deliberate retuning of how your brain distributes attention and connects to your body.

What Hypnosis Actually Is (And Isn't)

The first obstacle most people face when they hear the word "hypnosis" is carnival imagery: a stage hypnotist swinging a pocket watch, a football coach dancing like a ballerina for audience laughs, somebody clucking like a chicken without their consent. Spiegel dismisses this readily. "Stage hypnosis is I don't like it," he says plainly. The problem isn't hypnosis itself but its misuse—using it to humiliate rather than empower.

The deeper issue is that stage hypnotists work only with the 5% of any audience who are extremely hypnotizable. They then selectively invite those rare subjects on stage. This creates the false impression that hypnosis is either rare or trivial. In reality, it's a learnable state—highly focused attention paired with a specific capacity: the ability to narrow consciousness, to place certain thoughts or fears outside your awareness temporarily, and to forge unusual connections between mind and body. "It's a state that many people, not everyone, but many people can enter," Spiegel explains. Think of watching a film so absorbing that you forget you're watching a film at all—you inhabit the story. Hypnosis works similarly, except the imagined world is your own nervous system, your own past, or a version of yourself yet untried.

Spiegel's clinical application is radically different. He uses hypnosis to help people manage pain, quit smoking, reduce stress, and—most crucially—reframe traumatic memory. The difference between stage work and therapeutic work mirrors the difference between a parlor trick and neuroscience: one seeks surprise; the other seeks liberation.

How Your Self Is More Fluid Than You Imagine

The most unsettling insight from Spiegel's decades of practice is this: people can change dramatically in a single session, releasing addictions, shifting personality patterns, or recovering from seemingly intractable depression. Each instance of rapid transformation points to the same conclusion: "We are a lot more tangible than we imagine." Your identity is not a cage. It's a habit, a useful fiction the brain maintains to navigate daily life. But habits can be interrupted. Fictions can be revised.

Consider one of Spiegel's cases: a woman who had been sexually assaulted at twelve by a landlord in her native country. The family did nothing. She grew up internalizing the assault as a mark on her character. By adolescence, she felt the world had permission to speak to her however it wished. She emigrated to the United States, found stable employment, and functioned adequately by every external measure. But internally, she carried chronic depression—a fog that no medication had lifted in over a decade of treatment.

Spiegel guided her back into hypnosis to revisit the twelve-year-old girl immediately after the assault. She began to cry. A less informed clinician might have stopped, assuming therapy was causing more pain. But Spiegel asked her one question: "Is that her fault?"

Her answer shifted everything. "No," she said. "I'm stroking her hair. I'm stroking her hair." In that moment, within the focused attention state of hypnosis, she moved from victim-blaming herself to comforting herself—from perpetuating the trauma story to witnessing and gentling it. A week later, she called Spiegel's office. Her psychiatrist had noticed the change immediately and wanted to know what Spiegel had done, because, as she told him, "I'm not depressed anymore."

This is not magic. It is neuroscience in motion. The self that carries depression, shame, and self-blame is not your only available self. In hypnosis, you can try on a different relationship to your own past.

Memory Is Not a Recording—It's an Emotion With a Story Attached

The reason hypnosis can rewire how a memory lives in you is rooted in neurobiology. Memories are not neutral recordings filed in some archive of the mind. When the brain lays down a memory and when it retrieves one, both processes involve the same regions that regulate emotion and affect. The emotion and the memory are inseparable. You cannot have a "purely factual" recollection of trauma; the feeling is woven into the storage itself.

This is why talk therapy alone sometimes stalls. You can intellectually understand that an assault was not your fault—can recite it, believe it, even write it in your journal—and still carry the felt sense of shame in your body. The emotional valence of the memory remains unchanged because you have accessed only the verbal, cognitive layer of the memory, not the emotional infrastructure.

Hypnosis works differently. By entering the state of highly focused attention and selective awareness, you can access the memory in a way that engages the same affect-processing regions that stored it. You don't just think about the memory; you inhabit it differently. And in that re-inhabitation, you can update its emotional meaning. As Spiegel describes it, you "enter" the memory, change how it feels, and fundamentally alter how it lives in you afterward.

Hypnosis as the Oldest Western Psychotherapy

Hypnosis is not new. It has roots stretching back to the 18th century and was adopted and developed by some of the founding figures of modern psychology. Freud used it. The fact that Spiegel must repeatedly clarify that hypnosis is legitimate, well-researched clinical work speaks to how thoroughly it has been buried under carnival mythology and psychological skepticism. Yet the evidence is robust. Spiegel has authored over 13 books and 400 peer-reviewed papers. He has worked clinically with over 7,000 patients. Reveri, the hypnosis app he co-founded, extends this practice into digital form—making the state accessible to people who would never find a hypnotherapist.

The irony is that hypnosis was nearly forgotten by mainstream medicine and psychology, despite its documented effectiveness, largely because of stage entertainment and the rise of pharmaceutical solutions. But in recent decades—driven by neuroscience and functional brain imaging—clinical hypnosis has experienced a genuine renaissance. fMRI studies now show precisely how the hypnotic state alters brain connectivity and activity.

What Happens in Your Brain During Hypnosis

Functional magnetic resonance imaging has revealed something striking: during hypnosis, the brain exhibits a specific pattern of connectivity. Certain networks light up while others quiet. One critical finding concerns what Spiegel calls the "My Fault Network"—regions of the brain that activate when we engage in self-blame and rumination. In people with trauma histories, this network can become chronically overactive, running the same tape of guilt and shame on loop. During hypnosis, activity in these networks decreases. The usual relationship between the executive mind (your logical, verbal self) and the body-centered, affect-processing regions shifts. You are not thinking your way into relaxation; your nervous system is being guided into a fundamentally different mode of operation.

This is why hypnosis can help with pain management—a patient doesn't learn to "ignore" pain through willpower; instead, the sensory signal reaches the brain but the emotional tag attached to it transforms. The pain is perceived but not suffered in the same way. The same mechanism applies to smoking cessation. A smoker in hypnosis can access the craving, the habitual reach for a cigarette, but place it outside the sphere of immediate action. They observe it rather than act from it. One of Spiegel's patients had smoked for decades and described the experience this way: "I didn't want to stop. I smoked since." He quit, not through gritted teeth and willpower, but by shifting how he stood in relation to the habit.

Dissociation: Survival Tool or Lingering Trap?

One of the most honest dimensions Spiegel explores is the shadow side of hypnotic capacity. A child who survives abuse by mentally leaving their body—dissociating, floating away, compartmentalizing consciousness—is exercising the same skill that makes hypnosis possible. The capacity to separate your aware self from sensory experience is, in that moment, a lifeline. It lets the child survive what the body otherwise cannot.

But in adulthood, that same capacity can become habitual. A survivor who learned to leave their body as a child may continue that pattern reflexively, even when they are no longer in danger. They may find themselves distant from intimacy, numb to their own desires, operating on autopilot. The question Spiegel poses is deceptively simple but profound: Is your current detachment a protective skill still needed? Or is it an old survival pattern running past its expiration date?

This is where hypnotic awareness becomes genuinely therapeutic. It is not about forcing presence or shaming numbness. It is about discerning whether dissociation serves you now, and if not, whether you might practice a different relationship to your body and experience. Some people, through hypnosis, discover that they have agency over this mechanism—that they can dial it up or down based on present need rather than living as a slave to an automatic response.

The Default Mode Network and the Problem With Overthinking

Brain imaging has also illuminated the "Default Mode Network"—the set of neural regions that activate when your mind wanders, when you are lost in thought, replaying the past or rehearsing future anxieties. In modern life, many people spend enormous mental real estate in this mode: running scenarios, rewriting old conversations, imagining what others think of them. The Default Mode Network can be useful for planning and reflection, but when it dominates, it becomes a source of suffering.

Hypnosis, by contrast, narrows attention into focused presence. You are not thinking about floating; you are experiencing the sensation. You are not analyzing the hypnotic state; you are inhabiting it. This shift—from wandering mind to focused attention—is itself therapeutic. It gives the brain, and the nervous system more broadly, a rest from the constant commentary and projection. And it opens a doorway to a different mode of knowing yourself: not through introspection and self-analysis, but through direct experience and somatic awareness.

Where to go from here

If you are curious about hypnosis—whether for specific goals like pain management, smoking cessation, stress reduction, or simply to explore the malleability of your own consciousness—clinical hypnosis is an accessible resource. Apps like Reveri bring guided hypnotic sessions into your home. A trained clinical hypnotherapist, ideally one with credentials from recognized bodies in the field, can guide you through deep exploratory work. The core insight Spiegel offers is this: you are not trapped in your personality, your trauma, or your habitual patterns. You have far more flexibility than you imagine. Hypnosis is a tool for discovering and exercising that flexibility—not through force, but through attention, imagination, and the innate capacities of your own nervous system.