Just before you go to bed, drink the juice of one fresh apple and one fresh pear (combined together) and you will never, ever need ExLax, Metamucil or any such thing. You'll thank me in the morning.
For breakfast, my juice of choice is five carrots, a stalk of celery, a handful parsley leaves, an apple and a pear. It is pretty sweet and tastes much better than plain carrot juice. It, too, wil allow you to see how full of &$@); you are but, like the above combination, it lets you learn that quite naturally and comfortably, if you get my drift.