Freud's first great insight was the power of the subconscious mind , which he labeled the id.
Nothing occurs by chance.
Unconscious conflicts stemming from childhood and expressing aggression and sexuality motivate all behavior. A person has a higher conscious, the superego, which knows the rules of proper behavior. The ego mediates between the id and the superego. It also mediates and protects the id from outside social forces. Ego psychology , which developed from Freud's later work, seeks to bridge the gap between the inner personality and the environment.