
Sarah Elliston
Confidence & Self-Belief Specialist
Imposter syndrome affects high-achievers across every field — but most people who experience it have no idea how common it is or why it happens. Here's the full picture.
Imposter syndrome was first described by psychologists Pauline Clance and Suzanne Imes in 1978, when they noticed a pattern among high-achieving academic women: despite objective evidence of their success, these women maintained a persistent belief that they were not intelligent, and that they had fooled anyone who thought otherwise. They lived in constant fear of being 'found out'. Since then, research has shown that imposter syndrome affects people across all genders, industries, and levels of achievement — and estimates suggest that up to 70% of people experience it at some point in their lives.
What makes imposter syndrome particularly insidious is that it thrives most in high-achievers. The harder you work, the more you achieve — and the more you attribute your success to effort, luck, or charm rather than actual ability. When things go well, you feel relieved rather than proud. When things go wrong, even temporarily, it feels like proof of what you secretly feared all along. The success never quite reaches the inner sense of worthiness, because the belief that underpins imposter syndrome sits below the level where achievement can touch it.
At its core, imposter syndrome is a confidence and self-worth issue dressed up as a professional one. The specific beliefs vary — 'I'm not clever enough', 'I don't really deserve to be here', 'real experts know so much more than I do' — but they all share the same foundation: a gap between external recognition and internal self-belief. That gap is almost always rooted in early experiences. It may be a critical parent who was never satisfied, an education system that valued certain kinds of intelligence over others, or simply growing up with the message that showing confidence was arrogant.
Many people try to manage imposter syndrome by working harder, preparing more thoroughly, or seeking more reassurance from others. These strategies provide temporary relief but don't address the underlying belief. Each new achievement raises the bar; each new responsibility brings a fresh wave of 'now they'll find me out'. The reassurance fades quickly because it lands on a foundation of insecurity that isn't convinced.
The most effective way to overcome imposter syndrome is to address it at the level of belief, not behaviour. RTT is particularly powerful for this because it goes directly to the subconscious beliefs driving the phenomenon — identifying when and why you decided you weren't enough, and helping you reframe that decision with the perspective and compassion of your adult self. When the underlying belief changes, the imposter voice doesn't just get quieter — it genuinely loses its authority.
It's also helpful to understand that competence and confidence are not the same thing. You can be genuinely excellent at something and still feel like a fraud. The feeling is not evidence of the truth. High-functioning professionals with decades of experience, genuine expertise, and real contributions often feel exactly this way. Imposter syndrome is a lie the subconscious tells — and it's a lie that can be permanently updated.
Sarah Elliston
RTT Practitioner · Certified Hypnotherapist · Coach
Sarah works with clients across South Wales and the UK to help them overcome anxiety, build confidence, and create lasting change through RTT, hypnotherapy, and coaching.
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