I felt the exact same way back then. But do you think I gave up? No, I didn't. I felt something ignite within me, anger, hate, but not toward anyone else, just toward myself. So, I hit the gym, started doing chin tucks and neck curls, ate a ton, and got palate expanders and braces (yes, all at 16).
Now that I'm 17, you wouldn't believe the difference. I actually get compliments now. People even call me "daddy" (as a joke, obviously, but nobody would have ever made those kinds of jokes before). Don't give up. We're just teenagers trying to better ourselves. You have to be patient. Trust me, I've had girls tell me that if they knew I’d end up looking like this, they would have dated me.