I tend to be really tired and go to bed at 9:30pm or so and sleep so hard that I wake up at 2am and can't sleep anymore because my brain is running full blast. Worrying about all the things I need to get done. So I lay in bed until 5:30am until the alarm goes off. By then my tummy is rumbling. No fun. But one trick I have taught myself is that I repeat over and over one of the kids songs I had stuck in my head all day in my head so I can't think. I just let it flow. Even if it only to sing "spongbob squarepants" over and over and over, just those 2 words. Sounds silly and it is really annoying but it seems to help my brain from not going into thinking mode. :)