I'm guessing that your starving yourself because you think you're fat? Well that's not true, you aren't fat, make yourself believe that. Everyone sees in the mirror all of the bad things about them and don't see anything good. Believe in yourself and stop starving yourself, because that can end up worse than eating way too much! If people are saying your going to die then it sounds like you are anorexic, and that's really not a good thing. I suggest that you go and see someone about it, and they can help you. Because anorexia is a mental illness aswell as a physical one!