Stay in the present. ( The past is history, the future is a mystery. The toltec books I have listed got me out of my head and back into the present. I highly recommend reading them.)
Keep your focus on every positive, every moment of the day. Start with enjoying your first three breaths of air. Enjoy the days you are still a single household family. Just because you and W are not getting alone, does not mean you can not enjoy her when she interacts with the kids.
"What is best for my kids is best for me" Amor Fati Link to quotes: https://www.divorcebusting.com/forums/ubbthreads.php?ubb=showflat&Number=2879712