Carlos Castaneda was an American author and anthropologist, best known for his books on shamanism and spiritual exploration. He gained fame in the 1960s with his first book, The Teachings of Don Juan, which detailed his experiences with a Yaqui Indian sorcerer named Don Juan Matus. Castaneda's work blends elements of mysticism, philosophy, and psychology. His writings sparked interest in Native American spirituality and altered states of consciousness. Castaneda's books, including A Separate Reality and Journey to Ixtlan, have been both praised and criticized for their blending of fact and fiction. His influence continues in discussions about spirituality and personal growth.