Sigmund Freud's Theory of psycho-analysis profound impacts on literature. In the context of psycho-analysis, when the aspects of the past life of the writers, their writings and the dialogues and movements of the characters in these writings were critically evaluated, criticism came to light form new angles. In the field of criticism, the school of psychological criticims grew. Sigmund Freud discovered the three components of the mental realm: The Id, The Ego and The Super ego. Literary critics further expanded literary criticism by psychologically examining the fictional characters in the context of these components. The objectives of this research paper are to explain the terms "Id, Ego and Super ego of cognitive psychology and the review is to be submitted in the context of the Id, Ego and Super ego of the main character of "Abdur Rehman alias Mahna" in Ghulam-us-Saqlain Naqvi's famous novel "Mera Gaon".