Abstract
Man is the most complex and elusive creature in the living world. For this reason, different views have been put forward by many scientists and philosophers in evaluating and understanding human beings. Basically, like all living things, the human is a creature consisting of molecules, cells and tissues, but also with successes, failures and defects, and has dreams and visions of his own. Human beings are the only creatures on earth that try to establish superiority over the environment in which they live, modify them according to their own needs, thus minimizing the differential pressure of natural selection. Human is in an unlimited need to know, learn and research. Although human is the most intelligent and talented creatures in the world with unlimited power to create, develop and change, he/she is actually a living being and a part of the world in which he/she lives. One of the aspects that makes human beings different from other living things is the awareness that they have continuity from the past to the future. The life strategy that distinguishes him/her from other living things is to determine his/her life consciously, not instinctively. Freud contributed to the clarification of human behaviours by creating the id, ego, and superego models. According to him, the id represents impulsivity and aggression, the ego represents reality, and the superego represents punishment, morality, and conscience. In this review, it is aimed to develop suggestions for the functionality of id, ego and superego functions for the human to understand, realize and develop oneself. Keywords: id, ego, superego, mankind