Where in the brain is that little something that makes top performers feel so confident in their ability? Can that confidence be developed in someone who is naturally more timid? Dr. Nate Zinsser, director of West Point's Performance Psychology Program and author of The Confident Mind, explains how a sense of mastery develops, and why butterflies in your stomach are a signal from the brain when you're about to do something great. Plus... why Ted Lasso wants us all to be a little more like goldfish.