[valjean77]

Meditation.
Meditation is an incredibly powerful, whether you're talking the deep, conciousness altering type (breathing meditation is the easiest, that's basically what you're doing, Dave, research Buddhist meditation and look more into it, it may be helpful to you), or the Zen concept of mindful meditation or mindfulness. Very very powerful stuff if you learn to use it effectively. I highly recommend the book "Buddhism Without Beliefs." I forget the author's name off hand, but it's great, it's what I used to learn how to meditate, and I've had my copy for 7 or 8 years. The philosophies of Buddhism are really powerful tools for controlling your mind.