There are a great number of ego defenses, and the combinations and circumstances in which we use them reflect on our personality. Indeed, one could go so far as to argue that the self is nothing but the sum of its ego defenses, which are constantly shaping, upholding, protecting, and repairing it. The self is like a cracked mask that is in constant need of being pieced together. But behind the mask there is nobody at home.

Hide and Seek: The Psychology of Self-Deception