I don't know what, but recently, a lot of my anger has gone. I'm still angry at OW, still angry at the affair, but not so much at my WH anymore. He has been fantastic and continues to be, and I realise I do still love him. I think, "What am I going to regret on my death bed? That I didn't spend long enough angry at him, or that I didn't spend long enough showing my love for him?" Thinking of that has helped me, a lot.
I feel pretty good at the moment about things :) Just thought I'd share.