People tell me I should enjoy life while i'm still young and beautiful. What? Does that mean i'll be even more depressed when i'm older? Does that mean I'll get ugly and no-one will call me pretty anymore? Is this the best my life will ever be and then I will get ugly, old, sick, boring, tired and sadder? 
Another thing is, will people stop caring about me once i'm an adult? Even on reddit, people seem more concerned when they read that I'm 16. They say "you shouldn't feel this way at your age" and things along the lines. So if you're 34 it's fine to want to kill yourself but not fine at 16? 
I'm just really scared that i'll become nothing when i'm not young anymore. Has anyone felt the same or overcome these feelings? Is any of this true?