Oct, your getting some great advice so far, hope its helping. I love the lighthouse story also, its helped me so much in my darker moments of fear and panic.
With MC, and everything else really, developing expectations can cause your emotions to plummet when things don't go how you secretly want them to. Watch them and try to resist as much as possible. Try and keep an open mind that things will get worse before they get better, and anything is possible.
With me, I thought MC was helping so much until I realized W had OM in her heart and was only going to the MC so I wouldn't kill myself. When she told me she was done after 2 sessions I thought things were over and I was in a very bad place.
Realize no matter what happens, even if you divorce, things aren't over until you decide them to be for you. No one knows what the future holds, so control your side of this and let her control hers.
Accept what is, let go of what was, and have faith in what will be
