He gives a very good bit of advice that is applicable in other contexts as well: consciously attack your problems when you're "in a motivationally 'high' state." You practice new behaviors in the "high" state and gradually push them down to lower states through practice until they're dependable reflexes. This is the only way I've ever changed a bad habit, so if you're failing with cold turkey, give this a try.
For example, as humans, we're really not as hungry or thirsty as we "think" we are. In fact, hunger impulses are often the result of conditioning, what we do when we feel some kind of emotional deficit. Take note of the surrounding circumstances behind the trigger and you can begin to trace out your blind spots.
