There are a number of possibilities. You could try writing those issues down on a piece of paper, as a way of shelving them until morning. You could get up, get a fast cup of hot tea, read for a few minutes, and go back to bed again. You could do an evening workout after the children are in bed, with lots of stretching, so that your body will feel good and will want rest. You could try a little Valerian, which is a natural, non-drug, over-the-counter remedy for relaxing enough to sleep (look for it with the vitamins).
I'm a 2 a.m. waker as well - not every night, but often enough. I spend that time talking to God about the things that come to mind. He's up all night, anyhow, and He doesn't mind my bugging Him at that hour.
Oh, and get that snooze button outta there! Borrow a clock that just makes the obnoxious noise - with no loopholes - and put it on your dresser so you have to get out of bed to shut it off. Then make or spread up your bed immediately (assuming that your husband isn't still in it) so you'll be more inclined to stay up.