Ss06, without getting too detailed or personal - and not to negate your feelings AT ALL - but are you feeling hormonal? Because I always have an emotional meltdown around that time, almost like I have no choice.
Truthfully, there is no specific answer as to how you turn this around. But for your own sake, and for your daughter's sake, you really only have one choice and that is to keep moving forward. If big steps are too hard, or unavailable to you thanks to your H's stubbornness, work on the tiny steps. The *seriously* tiny steps. Do something that cheers you up, even if it's stupid. (For me, I watch stupid teen movies like Twilight, as embarrassing as that is, simply because they breed that sort of hope that only teenagers can have because they haven't been hurt yet!) Or go for a walk. Do everything one step at a time. Don't think about tomorrow, or the next, or the next. Just work on getting through one hour at a time.
Because I always have an emotional meltdown around that time, almost like I have no choice.