Self is one's awareness of ideas and attitudes about one's own personal and social identity. Self is shaped since young by reflecting self-image from other in order to sense one's own identity. Sigmund Freud developed a model of personality; it consists three items: id, ego and superego. Id is the basic drive and instinct for food, sex etc. that need to be satisfied unconsciously, and then the ego comes in and balance the drives and needs with the realities of life. Further more, the superego includes developments such as personal conscience ....