I never want to speak again

I never want to speak again I just can't deal with all this stress and anxiety. I keep blocking for such a long time just for one word. Happens at home, at work, at school, when I'm ordering food, I just can't do this anymore. I want to believe it gets better but I've had this stutter for almost 6 years now and I'm losing hope. Speech therapy didn't help, I was fluent during therapy but when I stepped outside it came back. Just now I had a really bad block while ordering food and I couldn't even look anyone in the eyes. I just don't know what to do anymore