Sleep depravation. I always sleep better when I'm in so much pain I just stay awake until my body wont allow it.
At bedtime I read my Kindle in a feeble attempt to take my mind off the pain. At some point I just pass out. I sleep like a baby until I wake up and and deal with the pain again for another 18-20 hours or so.
When I wake up I do my PT and/or other activities. This starts the process all over again. I don't wish this on anyone.