Anorexics, is there hope for me?

You need to eat. The fact that whenever you get up to get extremly dizzy tells me that you have to be extremly undernourished. You need to eat at least 1200 calories a day. An easy way to do this and not upset yourself is to eat very small amounts very often. Keep small bags of things like nuts. Eat one every hour. You need to eat more, or you will end up in the hospital.