Read Sandi's 37 rules my friend. We need to know as much as we can about your situation so we can get a better grasp to assist you through this difficult time.
I do not have a S going through a MLC but consider this; When we get in a fight with a friend we shout and get loud and stomp out of the room and disappear for a week or two and cool off right? What do we do when we are married? We get in a fight, we shout and get loud and stomp out of the room and instead of cooling off we say "No, take me back I love you and I'll change!!"
The change, your 180s, the complete opposite of what you were doing needs to be that. It also needs to be for YOU. Your goal cannot be to "lure" your W back and go back into the same habits. YOU need to realize her complaints in the past, her frustrations with you and YOU have to want it for yourself. It is possible a S can "smell" bait, you will have to keep these changes for a VERY long time. Your S may even run tests on you to see if you will "crack."
I know it sounds discouraging, but reread this when you are on a higher level of detachment. The sooner you can follow Sandi's list the better. Also, the sooner you can ground yourself and focus on you the better you will feel and the more attractive you will be in S's eyes.
Its a tough road, but if you stick with it you will be a better you whether she comes back or not.
"Don't chase people. Be yourself, do your own thing, and work hard. The right people - the ones who really belong in your life - will come to you. And stay." ~ Will Smith
