Carl Jung believed the psyche was structured through the conscious, unconscious, and collective unconscious. The conscious includes thoughts and ideas, while the unconscious includes dreams. The psyche expresses itself through the body in physical symptoms.
Jung mapped the psyche as having layers including consciousness, the ego with its five functions of stability, identity, cognition, executive functioning and reality testing, the personal unconscious containing complexes, and the deepest level of the collective unconscious containing archetypes represented through symbols. The body and psyche are interconnected, with the psyche expressing itself physically through somatization and the body influencing the psyche.