Self-control, like the stress response, evolved as a nifty strategy for responding to specific challenges. But just as with stress, we run into trouble when self-control becomes chronic and unrelenting. We need time to recover from the exertion of self-control, and we sometimes need to spend our mental and physical resources elsewhere. To preserve both your health and happiness, you need to give up the pursuit of willpower perfection. Even as you strengthen your self-control, you cannot control everything you think, feel, say, and do. You will have to choose your willpower battles wisely.
Here's the rest of my answer - this is more or less how i've discovered to make it work. Self analysis, counter analysis, negative and positive analyses, apply corrective habits to stack the deck better in my favor.
