The document defines personality as characteristic patterns of behavior and modes of thinking that determine how a person adjusts to their environment. It discusses the different components of personality, including physical and mental skills/abilities, as well as the social, private, and unconscious aspects. The document also examines the biological, common experience, and unique experience influences on personality development and lists several approaches to understanding personality, such as the trait, social learning, psychoanalytic, and phenomenological approaches. Personality results from an interaction between individual characteristics and environmental conditions and can be internally or externally controlled.