All Buddhist discipline flows from breathing, watching the breath.
Try not to think, except to ask why you are thinking. While instructing us to do this, Ch dr n doesn't offer much hope for contentment, or relief from the burdens of the monkey-mind. What they don't tell us is that the process of getting unstuck is as much a pain. It's enough to make you give up and head out to the Happy Times Tavern down the street and get zonked on a dozen or so Bloody Marys and then come home and light up a joint or two. Thus the road that Ch dr n offers us is not an easy one.