Bookstore self-help sections are laden with volumes telling us to lean in, act confident, or fake it until we make it. Although research shows there are benefits to glass-half-full thinking, it also links overconfidence to outcomes ranging from increased traffic accidents to the recent financial crisis.

In his 5-minute talk at TED@NYC, Hogan Vice President of Research and Innovation Dr. Tomas Chamorro urges the audience to take a more self-aware approach to confidence, and to embrace the power of negative thinking.