Id - The part of the mind in which innate instinctive impulses and primary processes are manifest.
Ego - A person's sense of self-esteem or self-importance.The part of the mind that mediates between the conscious and the unconscious and is responsible for reality testing and a sense of personal identity.
Superego - The part of a person's mind that acts as a self-critical conscience, reflecting social standards learned from parents and teachers.