Tao & Longevity: Mind-Body Transformation : an Original Discussion about Meditation and the Cultivation of Tao

Nan Huai Chin was a deeply realized master with experience in a number of traditions. I've been poring over this small book for years and years now, and every time I reopen it, I learn something new. It took me a while to realize how authoritative it is. Unfortunately, it won't take you all the way, as he bows out when you get to the bits that can't be talked about anyway.