Sorry to hear about everything you are going through. I think one of the most important things is a good night sleep. (again, easier said than done). I'm lucky if I get 3 hours of sleep a night, especially now cause I'm not feeling well. You don't have any bigger beds in the house? If you have a hard time actually falling asleep, try taking some sleeping pills.

You also mention you think you lost a good friend. Anything in particular that makes you feel that way?