I've felt the same feelings time and time again. I'm 19. In my second semester of university. And I won't give you the normal mumbo jumbo of just accept it and it's a part of you etc. For me, that kind of talk never helped. All I can say is that, life does get better and your speech will improve. You'll have days where it's extremely bad and days where it's mild. But you have to keep going on and try and experiment with every new technique that you find. And what often helps me is talking to others about my stammer. So if you wanna talk, I'm always available, and we have a discord channel where stutterers from all around the world interact with each other.