Hi sodad.... I'm really sorry that you have found yourself here. Sadly, you're story is all too familiar. I know just how crushing this all is.
As others have mentioned....exercise, sleep, take care of yourself and your children. It's not an "easy" feat by any means and won't "solve" anything...but it's a start to getting yourself back on your feet.
Read all you can on the subject (MLC/ Marriage/ communication) and then read some more. Look at things you want to change/improve about yourself (your psyche). I used divorce remedy as a textbook and highlighted passages to read over and over. I also took snippets of learnings and wrote my own synopsis of how each of those components played out in my life. I have tons of index cards that I would just review over and over and over and over. You do kind of need a systematic approach to this so your emotions don't get the better of you.
Again, I'm so sorry you are going through this. We're here for you.
Me- 30's H- 40's T-10 M-5 I moved out b/c he wanted space- June 15 D filed by H: September 16