Losing weight...?

I'm so obsessed with losing weight. the thing is is that im so obsessed that all i do is think about how much i want junkfood and i finally give in so i never lose weight. im on the verge of being anorexic or bulemic but im so obsessed with food that i dont think i could ever become one. i know all the risks of being one but i just want to be skinny so bad. i dont know what to do. i want to lose weight fast and without much effort but i cant find anything that works. Please help me......thanks So much....:D