Overconfidence is not a personality flaw. It's a measurable business risk. University of Chicago Booth research found that less talented CEOs over-promise, under-listen, chase vanity projects, and abandon strategies the moment short-term results disappoint. In good times, rising tides hide a lot of leadership sins. Downturns wash them out into plain view. The good news: the habits that separate skilled CEOs from overconfident ones are learnable, if you are willing to see your