What is overconfidence and how does it manifest itself?

What is overconfidence and how does it manifest itself?Harvard referencing for the sources pls ——- One important point with the individual essay (for this year) is to clearly demonstrate that you understand the different manifestations of overconfidence. To do this you might want to provide, at least, a clear definition for each manifestation, and illustrate each manifestation with one convincing personal example.—–