I honestly don't see how you do it with so much contact. Time heals all wounds but not seeing her will help quite a bit too. If there are steps you can take (legal) so that you don't have to see her so much it might be beneficial for your own mental health.
This is IMHO of course and formed out of my personal experiences and hindsight.
"Fear is the mind-killer" Muad'Dib Me 53, XW 44, DD 14, DS 12 Bomb and OM 12/15/06 Separated 01/02/07 Divorced 05/13/08 X married OM(OMH) 08/2009 Married 06/09/13
