If you can, I'd do a call (or calls) with the phone coaches.
You need a plan of attack, and you need change. This doesn't sound like a WW or MLC, so at least she's sane (all the other people just want some sanity and we'd be golden).
It sounds like she's a regular woman with some emotional problems and got fed up. The good thing is you know what you want, you know you have problems, and she's still there.
Here's what I would do.... you need to wooo her. You need to bend over backwards and sacrifice. AND you need to make it permanent. That means, you "change" for a little while, and go back to being what you were..... forget it, you're done (and I wouldn't blame her).
Now if it was a MLC W, don't do any of this, that's suicide. But for a real woman..... heck ya. And the other thing.... this is VERY important. Enjoy it. Now about enjoyment: What you enjoy, everything..... is a CHOICE. You may HATE doing dishes... do them and choose to enjoy it. You don't like cleaning toilets..... do it, and choose to enjoy it.
Find out what she doesn't like doing the most, and DO IT. Did you neglect something which is important to her? Get on it, right now. Then do it again, and do it again, and do it again. Change your behavior. Don't point it out to her. Don't say look at me. You need to HUMBLE yourself. You also need to pray for your wife, for yourself and for your marriage. Humble yourself. Change. Be the best man you can be. Then talk to her, probe her mind, start interesting conversation. Bring up good memories...... LISTEN and more importantly, HEAR. Shut your mount and don't try to fix her problems. Only act if she asks. Other than that, listen and hear. Women need their sounding board, and they need to know you care. Ask questions but do not try and solve their stuff yourself.
Make her happiness worth more to you then your own.
You still have a chance. Use it. It's not just time to man up, it's time to Husband up. You can do it. Take action, not words.