"author Martha Beck says of the ego, "Don't leave home without it." But do not let your ego totally run the show, or it will shut down the show. Your ego is a wonderful servant, but it's a terrible master--because the only thing your ego ever wants is reward, reward, and more reward. And since there's never enough reward to satisfy, your ego will always be disappointed. Left unmanaged, that kind of disappointment will rot you from the inside out. An unchecked ego is what the Buddhists call "a hungry ghost"--forever famished, eternally howling with need and greed. Some version of that hunger dwells within all of us. We all have that lunatic presence, living deep within our guts, that refuses to ever be satisfied with anything. I have it, you have it, we all have it. My saving grace is this, though: I know that I am not only an ego; I am also a soul. And I know that my soul doesn't care a whit about reward or failure."