I wouldn't go so far as to say that you're addicted, yet. But it sounds to me like we were once in the same boat. I recently kicked my own Adderall dependency, and it was by far the toughest thing that I have ever done in my life.
I still have the empty prescription bottle here next to me, but honestly, I don't want to have my prescription refilled. It makes me sick to think about it. I am 5'9" and I have always been thin, but I dropped 15 - 20 pounds from my healthy weight of 135 pounds. I was skin and bones, really.
Life without Adderall will feel strange at first, but it does warm up to you eventually. You will have to pick a good time to do it, and then do it. For me, I ran out of my prescription mid-semester, and I decided then that I would have to man up, get my work done without amphetamines, and then never touch them again. I am on winter break now, and I have all the time in the world to sleep and eat, and it feels pretty amazing.
To be honest, the unanswered questions are what still bothers me. Am I really ADD? Is that why the Adderall was so effective? Am I less intelligent now than before when I took Adderall? Have I caused any brain damage? Have I brought ADD upon myself by abusing a medication to treat ADD?
Who knows? But my best advice to you is to do it, just do it; finish your prescription and swear not to have it refilled. The sooner you can do it, the better, and you will thank yourself for it months from now when you gain back all of the weight you've lost and the clicking in your jaw starts to go away.