You need to calm down, buddy. Steady yourself. It wasn't as bad as it appeared a week ago, it wasn't as GOOD as it appeared yesterday, and it's not as horrible as it appears now.
You need to get yourself in a more even-keel place, emotionally and intellectually. One that says "My wife is intent on leaving me at the moment; I don't agree with it, and won't help it along; I still have hope in the long run for our marriage."