How do I let go of my anger towards my ex?

My ex and I broke up in february and stopped talking altogether in march, but every day I still think about him -- and thinking about him just makes me angry. When we first got together, he made me move to his hometown (a couple hours from where I used to live) and quit my job. Admittedly, it's at least partially my fault for letting him bully me the way he did, but I'm young and was naive enough to have thought that I was in love. Because of him, I had no income and was living in a ridiculously expensive basement apartment with a psycho landlord who wouldn't even let me open the windows. I was miserable. On top of that, he was constantly insulting me -- telling me how stupid and ugly I am. He told me I'm a terrible driver, and I soon after developed a fear of driving because of him. I was scared to death to drive my car. I couldn't go anywhere without having him drive for me. He was always making fun of my hair (I have a receeding hairline), gossiping about me with everyone and saying what an embarment my hair is. He called me a slob and a bum because my studio apartment wasn't as clean as he'd like it to be, and would scream at me while he watched me do household tasks like clean my cat's litterbox. It was non-stop emotional abuse. And then, I got food poisoning and had to be taken by ambulance to the emergency room. Because of that, he stopped talking to me altogether. I never got the chance to tell him off or let him know how miserable he made me. Instead, we just stopped talking. Yet I can't stop thinking about him and how miserable he made me, and it all just makes me so angry. Is there anything I can do to forget about him? I've been dating and hanging out with friends, as well as working (again!) full-time, and that seems to have helped ... but still, I can't let go of the anger.