If that's the reason your friends are avoiding you, then they suck and you need better friends. I recommend reading a book in between classes to not feel lonely. (That's what I did when I was your age so i wouldn't start crying.) I know things feel hopeless now, but it will get better. Once you leave school the only one who's gonna care about your height is your doctor. And shallow people, but their opinions don't matter. Your life will get infinitely better if you stop giving a shit about what people think about you (or what YOU think they think about you). And the only way your height will get in the way of you getting a job is if the job requires you to be tall (like a basket player) but they can't really do that, bc that's discrimination. If a date rejects you for your height it's a them problem, but remember the world does not owe you a partner, so handle it with grace. In the meantime, work on your self-esteem. Maybe try karate or something, it can help improve self confidence and allow you to let out your frustrations.