One thing I have learned in this is that what you believe is how you need to live. Whether you call integrity, loyalty, or just being true to yourself in the end you answer only to yourself. In 6 months you may change your mind and say "The marriage can't be saved", but when you look in the mirror you will be able to say "I tried" which is a lot better than "what if". To me it is a form of self-actualization...sticking to ones beliefs and loyalties is some times hard, but the person making the finally judgment is very tough, because it will be you.
From coming here and reading the books you have the tools you need, you have the end goal, and you have the integrity...so now is the time to look in the mirror and make that man proud!
Remember at one time...there was only one guy who thought the world was round and that is all it takes!