Personality is defined as fairly consistent patterns of acting, thinking, and feeling that determine how we interact with the world. Personality is influenced by both internal factors like genetics and temperament as well as external factors like upbringing and life experiences. Personality psychology studies how personality develops within an individual and is influenced by society, seeking to understand both similarities and differences between individuals. Personality development occurs through the interaction of temperament, character, and environment over time, helping to groom individuals and reduce stress while promoting positive attitudes.