Carl Gustav Jung was a Swiss psychiatrist whose research was deep-rooted in psychoanalysis. He was greatly influenced by Sigmund Freud and even conducted research alongside him. Eventually, though, Jung disagreed with many of Freud's theories. Jung is best known for his research in personality, dream analysis and the human psyche. His theories are so revered that they were made into their own school of psychotherapy: Jungian psychology, which is also called analytical psychology. Let's look deeper into the main theories of Jungian psychology.