The Dunning-Kruger effect describes a strange but very human trap: when someone knows little about a subject, they often dramatically overestimate their competence. The reason is simple. The very knowledge needed to be good at something is the same knowledge needed to recognise how good you actually are. When it's missing, so is the ability to assess yourself.
We've all seen it. Someone who just read two articles speaks with total certainty about a complex issue, while the expert with years of experience hesitates and says "it depends." It's not that the expert knows less; they know enough to see how much they still don't know. That's the flip side of the effect: as we learn, confidence often dips before it rebuilds on firmer ground.
Psychologically this matters because it touches how we see ourselves. Being able to say "I don't know" or "I might be wrong" isn't weakness; it's a sign of maturity and an open mind. By contrast, the need to always be right often hides fear rather than knowledge.
The antidote isn't to doubt everything, but to cultivate genuine self-awareness: asking for feedback, tolerating uncertainty, and treating mistakes as information. If you struggle either with harsh self-criticism or with accepting that you can be wrong, therapy can help. Take a look at our services.