Carl Jung was a Swiss psychiatrist and psychoanalyst who founded analytical psychology. He is best known for his concepts of the collective unconscious, archetypes, and individuation. Jung believed that our unconscious mind holds shared memories and symbols that shape our thoughts and behaviors. His work emphasized the importance of understanding these deeper layers of the psyche to achieve personal growth. Jung also explored the idea of synchronicity, which refers to meaningful coincidences that occur in our lives. He believed that these events could reveal insights about our inner selves and guide us on our life journeys. His theories have influenced not only psychology but also fields like literature, art, and spirituality.