I am going through a split (Oct 6th 2017)as well after 15 years. I don't know if this helps, but here goes. When I go to sleep I keep repeating the same phrase, something like I am healthy, I am strong, I am well. It could be anything you want to say as long as its positive. Also you won't start to mend without sleep. A good 8 hours can make a diiference in how you feel and deal with your thoughts. I take zzquill every couple of days to help me sleep. I know how much it hurts but remember you are important to a lot of other people so take care of yourself for them. Be strong!