You know, one interesting thing is the most beautiful women are often the most insecure. This is something I've observed for a long time. (Particularly in my own mother! And some of my close friends and relatives). I'm not sure why this is.... maybe it's because beautiful women are often conditioned to base their worth on exteriors which are very flimsy measures. All I know is you have to reach beyond that and find other things that nourish self-worth. (Not that one can't enjoy external beauty, but balance and depth brings more fullness and meaning to life).
And it's EXTREMELY typical of very attractive women to measure their self-worth on men. Unfortunately, that senario ususally leads to unhealthy relationships...
From what you've described, it almost sounds to me like you may need to do a little personal growth. I think you are recognizing this and hopefully you can pull away more and focus on you. You are a valuable person. Go out and do healthy things that make you feel good about you. I'm not saying you need to go out and find a cure for cancer, but even little things that make you feel good or make a difference. You may find yourself even happier than you were before the separation. Now's a great time for personal learning and growth! Take advantage of that.
There is no arriving, ever. It is all a continual becoming.