https://github.com/davepinch/pinchy.cc/blob/master/content/streams/hello-world/the-wandering-bridge/3/as-you-walk-around-the-world-changes-around-you.md
Basically, these techniques are merely designed to make it easier for the individual to achieve the out-of-body state when his brainwave pattern and personal energy levels have reached a point that he is in apparent harmony with his surrounding electromagnetic environment such that he feels that he has reached the threshhold where separation is a possibility.