I am going through the exact same thing right now. It is scary and exciting at the same time. The scary part is ending this for good and all the emotions that come with that and the exciting part is having PEACE in my life. I know I am doing the right thing and so are you. WE CAN DO THIS!!!
Just take it one day at time and listen to your gut and heart. Mine tells me that is I fall for the manipulation (AA meetings, I will change for good this time, I Love You etc.) I will be stuck in the same position in a few months. WE have already tried that numerous times and it did not work.
Take it easy on yourself and keep posting. Everyone here is so helpful ande I do not think I would make it without them.