In this original, eye-opening work, authors David Marcum and Steven Smith argue that the upside of ego is as powerful as the downside and answer questions about ego that have been a mystery to most people. In his landmark book, Good to Great, Jim Collins showed that one of two key traits defined leaders who transformed organizations from good to great: humility. But if humility is so powerful, why don't more of us have it? Why does ego allow us to...