Carl Gustav Jung (1875 –1961), was a Swiss psychiatrist and psychoanalyst who founded analytical psychology. His work has been influential in the fields of psychiatry, anthropology, archaeology, literature, philosophy, psychology, and religious studies.
Among the central concepts of analytical psychology is individuation—the lifelong psychological process of differentiation of the self out of each individual’s conscious and unconscious elements. Jung considered it to be the main task of human development. He created some of the best known psychological concepts, including synchronicity, archetypal phenomena, the collective unconscious, the psychological complex, and extraversion and introversion.