The autobiography of Carl Jung, Memories, Dreams, Reflections, written from 1957 when he was 81 until a few months before his death in 1961, is an important glimpse into the history of a brilliant mind as well as the history of modern thought. If you are curious about this man or about the birth of modern psychological thought, it’s required reading.
Also, you might try Jung’s Modern Man in Search of a Soul or Man and His Symbols or….I give up. There are so many and I could easily recommend any one of them for different reasons. Just read Memories, Dreams, Reflections and then see if you want more. Let yourself be guided.