In the article I mentioned yesterday by David Powlison, I came across this penetrating quote:
"In Christ, in order to sin, you must lapse into temporary insanity."
That's good to remember in the moment of temptation. Christ is so good, beautiful, satisfying, and wholeheartedly committed to us that the choice to sin is ludicrous. The war against sin is a war to see Jesus daily in this kind of light.