Shaves,
anger is a secondary emotion... It comes from something else... frustration, confusion, disappointment, resentment... whatever...

Right now you are frustrated because you want your marriage and your wife doesn't... Reality is if she doesn't want it, you really don't have a marriage. Detaching is understanding that this is out of your control.. You can't decide for her. Decide for yourself that you will be the best person you can be and come to peace that you will be fine or even great if you get divorced. Once you are detached from the outcome, happy with yourself and your life and her actions don't affect you anymore is when you will begin to see the change.