I was stuttering for my entire life, still dealing with it at 42. Kids in basic school gave me all kinds of abuse due to my speech. So I obviously developed social anxiety. The nastiest part about stuttering is, the more anxious you are, the more you stutter. I was given a lot of advice to just go to kids and talk. It only reinforced the anxiety and confirmed that if I really want to say something, it's impossible to say it. The only realistic solution came much later in life, when I realized I just can't give a fuck about whether people understand me. People who are interested will ask me again. People who are not, will just go away. That attitude lessened the problem, but didn't get rid of it completely. But it also requires me to give up on many things.