Yes, a 180 means to do the opposite of what you would normally do. So, if you were cold, then to do a 180 means to be warm. These are the kinds of changes that you should make.
My marriage, and many others have been healed by going to a Retrouvaille weekend. We learned how to communicate effectively with each other. How to talk to each other without getting into arguments. And how to negotiate so that we both get what we want, not one or the other. You can find info on their website, www.helpourmarriage.org. Two DB couples went this past weekend, and both found it helpful.
If you want to save your marriage, you will need to talk to your wife. But even more than talk, you will need to listen. Listen to what she says, and then try to explain it back to her. "This is what I think you are telling me,...." and ask her if your understanding is correct. You have much time to make up for. You will not make her love you ignoring her, or avoiding her, or any other such thing. You must always treat her AT LEAST as well as you would a stranger. If a stranger said to you, "I want to talk to you", would you find excuses to walk away?
