KTFO, can you come over here and beat up my H? You might or might not feel better but I think it would help me!
Sorry to make jokes at your expense. What you are feeling is 100% normal, DB'ing is hard because it requires that you act in ways that are counterintuitive.
You are doing a lot of things right, but your emotions are going to get the better of you if you don't find a way to reel them in.
The lists that Azzork suggested are helpful, I did them too. I cultivated close friendships outside of H. I learned to STFU and not react. I am now working on eating better and finding a job. It feels good and these things I did for me. OK, the STFU thing I did for H, but I find it helps me with my kids too, so I am glad I did it.
Hang in there, these marital issues are not easily or quickly resolved. You are in it for the long haul, just accept that you need to focus on yourself while your w works out her [censored]. If she does.