I agree wih all FY said about the sleep. But sometimes sleep just won't come, I know. So sometimes I just had the concept (got the idea here) of resting in bed. Knowing that was the best I could do for my body at the time. Then I would baby myself the next day after a sleepless night. There were nights that I only really slept one hour. But often it was my own fault for looking for pics of my H on FaceBook. Never a worthwhile activity.
It does get better. I now sleep very well most nights. And it will get better for you too.
Another helpful thing I've done is read on this forum in the middle of the night. Current sitches and archives. It helps to know you aren't alone. And it helped me to know my sitch wasn't nearly as bad as it could be. And it helps to know there is somewhat of a map for the future.
Me54/H47 '08 H is "done" March '12 H moved out Brink of D, December '12 2014 totally reconciled! ...... "I firmly believe in the...absolute possibility of marriage renewal." Jim Conway