This document provides an overview of psychoanalytic theory, including its key concepts of personality organization, structure, dynamics, and development. It describes Sigmund Freud's concepts of the id, ego, and superego; basic instincts of life and death; sources of anxiety; and defense mechanisms used by the ego like repression and rationalization. The document was written by Pradeep Kr. Maurya for a psychology course on psychoanalytic theory and its foundational ideas.