You just have to not give a fuck. By all means go ahead and do everything you can to fix your stutter and ability to speak but at the end of the day if it’s a part of you then you need to accept it. Your stutter will just make it easier for you to pick out the genuine people in your life. Fuck everyone else. Some practical advice though is to practice. If you have siblings or any family or close friends then practice introducing yourself to them 100 times. Then move onto random strangers and do it every single day. Be straight up and say “Hello how are you? I have a stutter and I’m just practicing introducing myself, my name is Rapunzel”. Repetition and brute force it until you’re so desensitized to the feeling of embarrassment and the mental blockage dissipates until all you have to worry about is verbalizing what you want to say. It sounds scary and hard but fuck it just do it. The beginning is always hardest but eventually you will realize it wasn’t so bad. What’s the worst that can happen? Everyone laughs at you? Again, who cares. Fuck it you only live once so just do it bro.