I think you've struck gold with the thought that your own self esteem issues are what is causing the hole in your soul these days--OW and W are just the hot sticks poking in the hole.
Make some positive strong moves for yourself. It all starts there, right!
P.S. Understand that I am not talking about taking time away from W and the kiddoes with the counseling. They all need you desperately now. If you flake out too much, you will be left--in a few years--with bad memories of yourself. Let's try to minimize those I hate myself feelings and be pro-active now, whaddya say!