Ego is the enemy (Hardcover, ryan holiday)

This book explains how people tend to think that the world revolves around them. The "it's all about me" approach comes from the ego, and this thinking distorts failures and successes because the ego is so subjective. When efforts fail, the ego blames everyone else and stresses out. When efforts are successful, the ego pats itself on the back, ignoring the contributions of others and blowing the win out of proportion. The ego is the enemy because it creates such a distorted view of results