Hey. We all know what it feels like to be at your lowest. My best advice to you is to find a path to acceptance. Once you real that no one really cares that you stutter and that YOU are your worst critic, living just gets easier. Trust me. Im in my late twenties and looking back to your age I also felt like it was the end of the world. I'm a manager now and have to speak daily in meetings despite having moments of intense blocking/stuttering. Just remember, people smell confidence on you and weakness on you the same way regardless of how you speak. If you show the world you are ashamed of yourself, they will pick on that. Inversely, if you show the world you don't give a shit - they will respect that. All the best. Keep your head up and don't be so hard on yourself <3.