I feel for you. I am in the same state of mind. Sometimes I feel like I am done, others I want to work it out. We are need to feel we are desirable to someone else.
From a man's point, sometimes it takes hitting rock bottom to figure out what is really important. Maybe same for women, not really sure.
As bad as it is, I believe unless you do all you can then the what if may come to haunt you. The only person you really have to deal with is yourself. If you can go through this without regret then you can always look in the mirror and know you did the best you could. For me anything else is unacceptable.
It does get rough. This weekend was bad for me. But, I still have to fight whether or not it works out. I don't want to regret any more then I already have.
A warrior does not give up on what he loves, he finds the love in what he does