The gap between what you've achieved and what you believe you deserve
Imposter syndrome isn't a clinical diagnosis — it's a persistent psychological pattern first identified by Clance and Imes in 1978. It's characterised by a chronic inability to internalise your own competence, despite objective evidence of success.
In plain terms: you've done the work, got the results, earned the title — and you still feel like a fraud.
It's estimated that up to 70% of people experience imposter feelings at some point (Sakulku & Alexander, 2011). But for some — particularly high-achievers in demanding roles — it's a constant, exhausting undercurrent.
The irony? Imposter syndrome tends to afflict the most competent people. Those who genuinely aren't good enough rarely worry about it.