I am like this too. If I get into conversations I start to stutter as well if it is like a lot of thinking or certain types of people that talk fast or are really articulate make my stutter worse with long winded conversations. My mind just kinda shuts down. I think we have some comorbid things going on like maybe very mild autism or something. Many autistics cannot talk and I feel like I can relate to this cause sometimes I can hardly talk as well my stutter is so bad sometimes. As I get older I do not care as much anymore when I stutter. I still worry about if people think I am competent enough to work and stuff like that. I used to be really hard on myself and self conscience. Like at school, when the teacher asked me my name I would stutter. Sometimes I think I have slid through the cracks and I need more help. I got a good paying job though, but sometimes I feel like if I lived in different circumstances I might be on disability or something. Sucks having a stutter but I feel like I am unique. Have not found anyone else like me in the world yet. Wish I did.