In everyday speech, personality refers to a person's typical patterns of attitudes, needs, characteristics, and behaviour that are relatively stable and consistent over time and across different situations, influencing how they think, feel, and interact with the world and others. In sociology and psychology, personality is studied as the enduring patterns of thoughts, feelings, and behaviours that make each individual unique. Various theories attempt to explain the development and structure of personality, including psychodynamic, humanistic, trait-based, and social-cognitive perspectives, each emphasizing different factors such as unconscious drives, personal growth, stable characteristics, and the interaction between individuals and their social environment.