Good for you. You are on the right path. You are making choices to keep your power and not let him have control over you or your emotions. It will get easier.
Before you know it, it will phase you less and less. You will probably start making decisions to avoid the drama and overbearing emotions. You will probably still think about him and his reaction to this. It gets easier and you will find in time, you won't think so much about him anymore, but yourself. And you will realize you are doing things for yourself and not because of him.
High-five, Ats! You are great!