This study aims to describe the Id, Ego and Superego in the main character, namely Sempati contained in Triskaidekaman's novel How to Be Happy Without a Head using a Literary Psychology approach based on Sigmund Freud's Psychoanalysis, while the method used is a qualitative descriptive method. Then the data obtained from this study were taken from research data sources, namely the novel Ways to Be Happy Without a Head which is in the form of quotations. The results of this study indicate that the personality structure of the main character originating from the novel How to Be Happy Without a Head is divided into 3, producing 77 Id, 31 Ego and 20 Superego, thus it can be concluded that Id or desire that Sempati thinks of as the main character is more inclined or bigger than the Ego and Superego.