I can't believe this is another one from so many coincidences , synchronicities on this forum. I was about to write a post about his books. I am currently reading this man's (Graham Nicholls ) "Avenues of the Human Spirit". I recommend this profound and written with no pomp personal insight into the out of body experiences and spiritual development. His other book which I started from was "Navigating the Out of Body Experience: Radical New Techniques" also worth reading. It was like a detox after certain unfortunate brainwashing book I had been reading but never finished.