“When I am about to start davening, I am overcome by a terrible sense of embarrassment.  How can I approach Hashem in prayer when my life is so riddled with sin?  On second thought, however, I realize that this must be my yetzer hara talking, trying to dissuade me from davening.  How do I know it’s him?  Because this never happens when I’m ready to eat!” ~ R’ Michel of Zlotchov zt”l from Torah Tavlin