Why incompetent people think they're amazing - David Dunning

People lacking knowledge and skill in certain areas suffer a double curse. 

1. They make mistakes and reach poor decisions
2. Those same knowledge gaps prevent them from noticing their errors. 

In other words, poor performers won't notice how bad they are doing. For example,  a study showed that 25% of teams in a college debate tournament lost nearly four out of every five matches, but thought they were winning almost 60%.

The Dunning-Kruger effect isn't about an ego blinding us to our weaknesses. Once people can spot their deficits, they usually will admit to them. That is why people with moderate experience often have less confidence in their abilities. They know there's a lot they don't know.

Experts tend to make a different mistake. They tend to be aware of their knowledge and assume everyone else is knowledgeable too. As a result, they don't see how unusual their abilities are. 

1. Ask for feedback from other people and consider it, even if you find it hard to hear.
2. Keep learning. The more knowledgeable we become the more we will know how competent we are.