Ahhh, the pity parties.....that IS a dangerous ground.
Something I do to try to pull myself out of that...when I feel like "why is this happening to me...how unfair." I start thinking of all the things I did in our M that I am still pretty ashamed of, where I should have, could have, acted better. I think of how it must have made H feel, how he feels remembering all those things now....then, your mind wanders, quite naturally, to a realm of action...of firm resolve in the great changes that you have already made, on how you can improve...that usually gets me pretty excited and feeling more powerful. Changing me is something I CAN control and succeed with. The rest will come from there.