x2 on what Gardener said...don't sweat it. If you let your heart control your mind and dwell over it then it'll hurt, tell your mind to stop listening to your heart. I know, easier said than done but it can be done.
Here's what helps me...I picture myself 10 years from now where will I be, where would I want to be. Then I picture myself shedding dead weight of all the material things (too much clutter really) and living a simpler life. When I get to that point I feel OK.
Me: 35|WAW: 38|D: 6yo | http://tinyurl.com/2dxx7m6 Feb 2006, left, came back in two weeks Aug 2006, left again Apr 2007, filed for divorce Dec 2007, reunited Mar 2010, moved out, filed again