Sigmund Freud identified and divided personality into three significant systems: the id, the ego and the super ego. There is an energy that fluctuates between the three regions and they are in constant interaction. The id is the instinct that is present at birth. The two basic types of instincts that provide energy for the id are pleasure seeking, collectively called the libido, and aggression, labeled the destructive or death instinct. Fixation, the refusal to take the next step in development because of fear of the strange and unknown, and regression, retreating to an earlier stage of development, are two disturbances in the libido development. Freud also believed that all infants go through oral, anal and genital phases, although a person could experience a fixation at any stage. He believed that the sex drive is important in development and that our lives are determined by the conflict between the sexual instincts, which

are the most intensively repressed, and the ego drive.

The ego is the ruling branch of the personality system. It controls the conscious, and the actions in the environment. The ego acts as the liaison between the id and superego. It controls the secondary process of thinking, knowing, and problem solving. The ego works to get what the id wants; however, this is done gradually, for the ego operates under the reality principle. The ego seeks protection in the form of repression. Also, the ego is able to differentiate between the past, present and future.

An influential Freudian assumption was that dreams are the fulfillment of unconscious wishes that we do not recognize. The motive for forming dreams is an unconscious impulse, which has been repressed during the day. There is a greater and better part of unconscious processes known from dream interpretation. The understanding that psychic processes are as strictly determined as physical ones allowed dreams, fantasies, and everyday errors to be studied. Now there was the understanding that a person's reactions can pierce intensely. Freud established the dynamic concept of the wish as a process. The only difference between dreams and the state of wakefulness is the degree to which the censor is active. During sleep, it is more relaxed. When the censor is not alert, material can try

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