Carl Jung was an early supporter of Freud because of their shared interest in the unconscious. He was an active member of the the Vienna Psychoanalytic Society (formerly known as the Wednesday Psychological Society).
When the International Psychoanalytical Association formed in 1910 Jung became president at the request of Freud.
However in 1912 while on a lecture tour of America Jung publicly criticized Freud’s theory of the Oedipus complex and his emphasis on infantile sexuality. The following year this led to an irrevocable split between them and Jung went on to develop his own version of psychoanalytic theory.
Differences between Jung and Freud
Theory of the Libido
Jung (1948) disagreed with Freud regarding the role of sexuality. He believed the libido was not just sexual energy, but instead generalized psychic energy.
For Jung for purpose of psychic energy was to motivate the individual in a number of important ways, including spiritually, intellectually, and creatively.
It was also an individuals motivational source for seeking pleasure and reducing conflict
Theory of the Unconscious
Like Freud (and Erikson) Jung regarded the psyche as made up of a number of separate but interacting systems. The three main ones were the ego, the personal unconscious and the collective unconscious.
According to Jung, the ego represents the conscious mind as it comprises the thoughts, memories, and emotions a person is aware of. The ego is largely responsible for feelings of identity and continuity.
Like Freud, Jung (1921, 1933) emphasized the importance of the unconscious in relation to personality. However, he proposed that the unconscious consists of two layers.