Mako is right. Introvert/Extrovert, committed/not committed, same house/different state, kids/no kids, OM/no OM. None of it really matters. Your job doesn't change. Pray to God, Take care of yourself, Love your W.
I can't express enough how much you really have to rely on Faith during this process. Michelle implies it with "believe none of what you hear and 1/2 of what you see." You have to really have Faith in yourself - that you are a good man, capable of dealing, changing and becoming a better man. Faith in your W - that even though she is struggling, deep down, she meant what she said on your wedding day. Faith in your R - that though we all made errors in our M, our bond to our W is so much stronger. And most importantly, Faith in God. So many people say they believe in God - but you truly have to make the leap from "I believe in God" to "I believe God" - not in. You have to believe what He says to you in scripture and what He wispers into your soul. When you can say I believe God, not just "in God", you'll find the peace in knowing this will all work out. And it will.
Me - 43 and She -36. No kids. Married 7 yrs - Together 14 yrs