My personal favorite was a book that's considered an autobiography of Swiss psychologist Carl Gustav Jung. It's called "Memories, Dreams, Reflections". The book is over 500 pages long in my native language but I read it in 3 days. Jung is known for such ideas like Collective Unconscious, Archetypes, he introduced concepts like extroversion and introversion. He is known for having a profound interest in religion, mythology, and even the occult. He saw these ancient traditions and their practices as a symbolic expression of things like psychological development and the structure of the unconscious mind.