I'm going to speak purely from my experiences, and therefore be rather blunt.
I get the whole "for life, til death do we part, better or worse", all of that. Been there.
But let me be clear: She's not your wife right now.
The sooner you REALLY get your head around that, the sooner you will move forward. And by moving forward, I do not in any way, shape, or form mean finding someone else. You need to let go of your old marriage before you have ANY chance of having a new one.
Let it go.
Let her go.
Do NOT do things that you hope will "win her back". As counter-intuitive as that seems, it's counter-productive. Pretty much everyone is telling you that.
Find yourself.
Be the greener grass.
For you.
Everybody hurts. It's part of life. Don't miss the good stuff.