Practice, practice, practice! This is the big difference between those who are merely giving lip service to Buddhadharma and those who really get what the old boy was talking about. Go on retreats with sane teachers and follow the instructions to the letter all day long. Find people who know how it is done and hang out with them. Keep it simple. Avoid magical thinking (except when doing magick, more on that later) and don't lose your common sense.
