Journey of Transfermation of a celebrated Psychologist Dr. Richard Alpert Ph. D into Baba Ram Dass. He calls it as a "Cookbook for a sacred life".
Amazing journey. His Guru, Baba Neem Karoli, who also was guru of Steve jobs and Zuckerberg.
When I first saw this book, printed in rather a bizzare format, but it was so gripping that I couldnt stop reading it until I finished. Dr. Richard Alpert was keenly interested but not really ready to dive into spirituality. His interest was keen but almost like ours, more of curiosity rather than becoming a Yogi...but things took him without even him knowing.
A great read. Also look up https://en.m.wikipedia.org/wiki/Ram_Dass He has written a couple of more books.