Carl Jung made critical contributions to psychology by introducing concepts such as the collective unconscious, archetypes, and psychological individuation. He emphasized the importance of the inner self and the personal journey toward self-realization. Jung's ideas about the interplay between the conscious and unconscious mind expanded traditional understandings of human behavior. His exploration of dream analysis and psychological types also paved the way for various therapeutic practices. Jung’s work influenced fields beyond psychology, including literature, religion, and art, by promoting a deeper understanding of the human experience and its complexities.