koolgirl:

The first thing I'd advise is get a good night's sleep. If you're trying to get a project done, you'll be a lot more efficient and think more clearly when you're rested. If you're too stressed to sleep, then go jogging to get your energy level up and clear your head. (I find that when I'm jogging I can solve a lot of programming problems after a time or two around the track.)

...roboticus

When your only tool is a hammer, all problems look like your thumb.