When you think you are finished with all of your work today, take another look and make sure. You cannot leave anything undone before calling it a day. Tie every loose end up in a neat little bow, and be certain that done really means done. It's the only way to let yourself breathe a deep sigh of relief and free yourself up to put your mind toward more frivolous pursuits -- without feeling even the tiniest twinge of guilt. Following through with tasks can be time-consuming, but it's time well spent.