Eating disorders are a disease. It's not easy to get over something that you've been doing for a long time. It's become a part of you, it's an addiction. From what you've said in your posts, you obviously don't want to continue like this. It's mind over matter. You have it in you to stop. You and only you have control over your body. So control it, start eating. Stop feeling guilt. Your parents are supposed to provide food, clothing, shelter, it's what they signed up for when they had you.
You stood up to me before. When I said something you didn't like, you gave me attitude. Obviously there's strength in you, so find it, use it. You're not nearly as weak as you think. I've seen the strength in you, now you just have to see it.
You have the ability to change your whole life. Don't let your past define you. Don't let your circumstances determine who you're going to be. You and only you can make that choice. Either you let your circumstances control you or you control them. You have the backbone, so use it.
I have faith that you can do this. I have faith in you. Now all we need is for you to have faith in yourself.