The brain’s role in self-doubt
When I was asked to lead a new team tasked with shaking up the way financial auditing was done, my first reaction wasn’t excitement, it was panic. On paper, I was a strong choice: years of experience, a strong track record, and a knack for finding better ways to do things. But in my head, all I could think was, why me? Surely there were others more qualified. As I stood in that first planning meeting, surrounded by sharp, seasoned auditors, I half-expected someone to question my place at the table. The idea of challenging an entrenched system was daunting enough, but the quiet voice telling me I didn’t truly belong there made it feel like I was about to be exposed as a fraud.
That’s imposter syndrome, and neuroscience can explain why it feels so real, even when the evidence says otherwise.
At its core, imposter syndrome is a cognitive bias. Your brain processes information in a way that magnifies shortcomings and downplays successes. Psychologists call this discounting the positive. If you give a presentation and 95% of the feedback is positive, your brain might fixate on the one critical comment, replaying it over and over while the praise fades into the background.
Memory systems play a part too. The amygdala, a brain region linked to threat detection, is quick to store negative experiences in vivid detail, especially if they trigger strong emotions. Meanwhile, the hippocampus (which helps consolidate memories) doesn’t store positive events with the same urgency unless you consciously pay attention to them. This bias towards threat and error detection was useful for survival in the past, spotting danger kept our ancestors alive, but in the modern workplace, it can make you hyper-aware of mistakes while overlooking your competence.
Why it sticks
Once the brain settles into this self-critical pattern, neuroplasticity kicks in, but in the wrong direction. Repeatedly thinking I’m not good enough strengthens those neural pathways, making them the default response to success. The more you feed them, the faster and more automatically they fire.
This is why imposter syndrome can linger even in people with long track records of success. The brain has simply practised self-doubt more than self-recognition.
Perfectionism adds another layer. Setting impossibly high standards means the brain rarely registers a “complete” win. Even strong performances feel inadequate because the bar keeps moving. That constant sense of falling short reinforces the imposter narrative.
How to retrain the pattern
Here’s where the same principles that support growth in coaching can work in your favour. Neuroplasticity doesn’t just lock in unhelpful patterns, it can also replace them with better ones through repeated, targeted practice.
The first step is awareness. Catch the thought I just got lucky as it arises. Pause and ask: What specific skills, decisions, or actions did I contribute to this outcome? By forcing the brain to recall concrete evidence of your competence, you activate networks that support a more balanced self-assessment.
Next, make success tangible. Write down achievements, no matter how small, and revisit them regularly. This repetition strengthens the neural circuits that connect your actions to positive results. Over time, recalling your wins becomes easier and more automatic.
Finally, use social reinforcement. Talking openly about imposter feelings with peers or mentors provides two benefits. First, it normalises the experience, reducing the brain’s sense of isolation or “uniqueness” in the problem. Second, hearing objective feedback from others engages reward pathways, especially when it’s specific and detailed, which can help cement more accurate self-perceptions.
The bigger picture
Imposter syndrome isn’t a fixed trait; it’s a learned mental habit. And like any habit, the brain can unlearn it with the right approach. Through conscious reflection, deliberate practice, and consistent reinforcement, those old self-doubt circuits can be weakened while new, more empowering patterns take root.
You may still feel the occasional flicker of Do I really belong here?, but feelings are not facts. As your brain rewires, those doubts lose their grip, leaving more mental space for confidence, creativity, and growth.
Your achievements are the product of skill, effort, and persistence,s and your brain can learn to see them that way too.
