Nothing is a quick fix, sweetie.
He hasn't destroyed you, his actions have hurt your feelings and made you question your own worth. You are still you, and his actions are not a measure of your worth.
You CAN heal from this and have a happy life. Lots and lots of us have done it. We are no better, smarter, more capable than you are. It takes time, and it takes practice.
Good going on your first day. On to the second. You can DO this!