Not Sleeping

I am not sleeping right. I fall asleep on the couch, get into bed, and can't sleep. Or, I fall asleep in bed and wake up at like 1am and feel like I toss and turn til 5. It sucks. My back aches. I think I am tense in bed because I am stressed out. I am thinking about classes and the economy. They laid people off in of our offices yesterday. Scary. Lots going on in my head.