You've done a lot of soul searching and your personal growth has grown. The question is...what do you need to be fulfilled? What is it that you want to accomplish in your life? How can you get from where you are to where you want to be?
Sometimes, if you sit quietly, the answers will come and other times, the answer will be right there in front of you. The maze of life has many stopovers along the way and we have detours as well. Those stopovers and detours may be the actually openings to assist you in what you are searching for. Please don't be too quick in dismissing the openings.
As for your xh, he's still got a lot of growing to do and yes, you've recognized that he would be at the starting point and would have to actually do the work to earn your trust, etc. back.
I believe you will find your answers very soon because you are a determined, intelligent lady.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.