I get where you're coming from about the kids, mdu. I can only imagine how you feel without them for even a couple of days let alone a week.
I agree with Maybell about detachment. You have to look after yourself first.
Me: 31, W: 29 T: 4 M: 2 Kids: 3 (SS: 7, SD: 4, D: 3) Separated, still living together: Nov 2013 Separate bedrooms: Feb 2014 W working away; kids with me: Nov 2014