"Well, I've learned how to take care of myself with him and I'm still in pretty good shape so I don't think I'll have any trouble finding someone else. It sure was nice while it lasted."
Take it from someone who knows. From someone who has been where you are at. If you don't fix the problems that you are having in yourself, you will be doomed to repeat the mistakes of the past. The issue is not in finding yet another guy, but in how you choose to relate to whatever guy you are with. In how you feel about yourself. In what you want from life, are willing to accept and not willing to accept. Happiness is something you choose, not something that happens to you. Or something that yet another new husband will bring to you. Only when you can be truly happy with yourself, will anyone else be happy with you.
The answer does not lie outside of you, but deep within your heart and soul. Maybe spending some quality (and in your case lengthy) alone time would be just what the doctor ordered. Get to know and appreciate you. You might just be surprised at who you find.