Can one psychedelic experience really change who you are?
According to Dr. Olga Chernoloz in her book Psychedelics A to Z, the answer might be yes. Drawing from both scientific research and firsthand accounts, she reveals how psychedelic substances—particularly psilocybin, LSD, and ayahuasca—can lead to meaningful, sometimes lasting shifts in personality, values, and behavior. These aren’t just stories of feeling “better” after a trip. In many cases, people report becoming more empathetic, more open, and more connected to themselves and others—even months or years later.
How is that possible?
It starts with neuroplasticity. The chapter “N: Neuroplasticity” explains that psychedelics act as what some researchers now call psychoplastogens—substances that increase the brain’s ability to form new connections. Under the influence of psychedelics, neurons start communicating in ways they usually don’t. Brain regions that don’t typically “talk” to each other begin exchanging information, breaking old patterns, and introducing new ones. It’s as if the brain briefly switches out of default mode and enters a remixing studio where it can rearrange its usual beats.
This matters because personality, beliefs, and habits aren’t fixed. They’re shaped by deeply worn neural pathways, many of which form in childhood or in response to trauma. Psychedelics may provide a rare opportunity to loosen those pathways and build new ones. Think of it as shaking the snow globe of your mind. For some, that shake-up can feel like liberation.
But the trip alone isn’t what transforms people—it’s what happens afterward. That’s why the book emphasizes the importance of integration. In “Y: You,” Dr. Chernoloz describes how people often emerge from psychedelic experiences with a new sense of purpose or moral clarity. Their priorities shift. They become less self-centered, more nature-focused, and more community-oriented. This isn’t because the substance told them to behave differently. It’s because they felt something—awe, unity, love—that was real enough to stay with them.
Interestingly, studies show that people who undergo “ego death”—a temporary loss of identity or self-boundaries—are among the most likely to report lasting personality change. These experiences often shake people out of rigid worldviews, helping them see their lives from a broader perspective. Instead of being trapped in their own narrative, they see themselves as part of a much larger story.
Of course, not everyone has a life-changing trip. And not all personality changes are positive. A small number of users may become overly fixated on mystical ideas or struggle to re-integrate into everyday life. But in clinical settings, when preparation and support are present, the data suggests that many people experience measurable improvements in mood, behavior, and worldview after just one or two sessions.
Ultimately, the book doesn’t promise miracles. But it does suggest that in the right context, psychedelics can act as powerful tools for self-reinvention. They can help people become more of who they want to be—not by escaping reality, but by seeing it more clearly.
And maybe, just maybe, that’s the kind of rewiring we all need.
