Primitive and instinctive component of personality. The id is impulsive and unconscious, and operates according to the pleasure principle.
The superego is the counterweight to the id.
It is the person’s conscience. (moral). It works to prevent the id from seeking selfish action.
The ego is the system that mediates between the unrealistic id and the superego. Ego is a referee between temptation and virtue, it operates according to the reality principle.