I can't take being dizzy everyday anymore?

I have a bad eating problem....I stay up all night and don't get up til like three in the afternoon...So I don't eat breakfast or lunch...I'm so dizzy right now...It makes me cry because I can't handle it anymore. It seems like I'm always hungry. I mostly eat junkfood but I'm trying to stop that and eat real food when I'm hungry..Please help me.. =[