This document discusses personality from several perspectives. It defines personality as a set of stable characteristics that influence behavior. It also outlines several theories of personality, including trait theory, psychodynamic theory, and humanistic theory. Additionally, it examines the Big Five personality traits of extraversion, agreeableness, conscientiousness, emotional stability, and openness. Finally, it analyzes several personality characteristics relevant to organizations, such as locus of control, self-efficacy, self-esteem, and positive/negative affect.