Stuttering isn't curable but it can be tolerable. You're young, you've found this subreddit (how I wish this existed when I was 15) and you have years to figure it out. Things will change. It won't get better every time it changes, but it probably won't remain static. You have a lot of potential for improving your situation - try to be open to understanding yourself better and what you can do. I'd start with [NSA meetings](http://westutter.org/find-nsa-meeting-near/) if there's one near you.