"Zen and the Art of Motorcycle Maintenance" by Robert Pirsig is my alltime favourite. He writes just brilliantly . Incidentally, he has stayed in Benares and studied Hindu philosophy. Later he came out with Lila. This was also good.
I like reading books by Scott Peck. Who has not heard of Dale Carnegie ?
I've heard of Castenada. I have not read any of his books.