I have a stressful situation going on. It's not the end of the world, it's resolvable in a relatively short space of time. There isn't much I can do right now to fix it, it will just take a little time. I know this and during the day I feel ok. A bit fed up, but ok. But I woke up at 3am stressing about it, thinking of (unlikely) worst case scenarios, getting panicked about it etc. So I was thinking why do problems all seem so much worse in the middle of the night than in the light of day? I think I finally got back to sleep about 5:30. How do I make my rational day brain tell my night brain to relax?!