‘Ego, super–ego, and id’ outline Freud's revisions of psychoanalytic theory concerning narcissism, the structure of the mind, and aggression. Narcissism is the concept of self–love, which is balanced against the love for others. A small amount of self–love leads to a sense of self–esteem, but too much leads to imbalance and neuroses. Freud's work on narcissism caused him to change his bipartite model of the mind to the familiar id, ego, and super–ego model. Aggression was originally thought to be a part of the sexual instincts, but it is actually distinct. He explains an internal battle between the creative drive Eros, and the aggressive, destructive, death instinct.