The founder of psychoanalysis in Sigmund freud (1856-1939).to understand human behaviour psychoanalysis is a system of treatment that has given rise to discoveries and controversies that are actively with us today. It is a method of examining psychic phenomena and treating mental and emotional disorders that is based on the concepts and theories of Sigmund Freud, that highlights the importance of free association and dream analysis, and that involves treatment sessions during which the patient is encouraged to talk freely about personal experiences and especially about early childhood and dreams.

The unconscious mind is made up of several, memories, feelings and urges that are external from our conscious mind The contents of the unconscious are generally unacceptable or unpleasant. Such as feelings of pain, anxiety, or conflict. According to freud,1923,p.15. The unconscious continues to affect the behaviour of an individual, even though the person is unaware of these fundamental influences.

Freud believed the construction of a human personality is made up by three elements; the id, ego, and superego. The id is present from birth. The personality is mainly unconscious. The primary component of personality is the id. The driving force of id is to attempt immediate gratification of all needs, desire and want. It results in a state of tension or anxiety if the needs are not satisfied immediately or failed to be satisfied .For an example, if a baby is hungry or thirsty ,the