Look dude. I got it too. And know exactly how you feel & and right now you and me we got this issue and it bugs us a lot. I can relate. But instead of letting it destroy you just sit with it and understand the problem, because that's all this is, a problem. A problem to be solved and nothing greater than that. Sit with your self and understand which sounds you stutter on most, I'm guessing m sounds and s sounds. Now pick up a book you like or have always wanted to read, stand in front of the mirror and again sit with yourself, understand the pace at which you speak. Learn the pace at which you NEED to speak then slowly practice that. Over and over again. Everyday. 30 mins. And with your mental state one of the things that helped me is realising no body or not as many people care about my stammer as much as I do. I hate myself more than anybody else for my own stammer and i realised that if i look at this as a problem that I'm trying to solve, hating myself isn't going to speed things along. I'm not asking you to not care about your stammer. I'm asking you to make your peace with it. That too just for the time being because trust me that reading will help. Best of luck :)