Personality theory tries to find people who share similar personal characteristics and identifies the factors that are different and unique in different people. Freud developed a personality, from his spiritual insight, the first theory, in the early 1890s to be his treatment of neurological patients: the unconscious forces to determine the existence of human behavior. In the next 40 years, he developed the most influential 20th century theory of personality.
Author elaborates the concept about personality theory in the second half of the 20th century. He speculated that self-development, will work closely together to change the social system ...