I think that people with stutter are stuttering when they subconsciously expect, worry and get subconsciously tense. I know that I never stutter alone so I don't stutter alone. I would stutter with everybody if I'm in a period when I stutter more with people, friends, family. Then I'm losing confidence and it gets worse until it starts to get better after I do more reading aloud. It's always like a snow ball, getting worse or better according my confidence level. I read that's like negative or positive autosuggestion. Of course, we have genetic component for stutter. But I'm amazed that I never stutter alone so if I keep calm and accept that I can stutter sometimes, I would not get into bad blocks. That's my goal, stutter sometimes with a little repetition but in a relaxed way. Hoping that that way I would not get blocks even with facial ticks if I forced to get it out. Now I'm watching a YouTube channel with Andrey Denisenko about stutter. I think that he understand the psychology of stutter well. I think that you stuttered at home because you subconsciously thought you might. Now I figure out a new way of thinking what words I would worry to have trouble with and then repeated them many time aloud to show my brain that I can say them. I could see already good improvements in upcoming small talks. Good luck 👍🤙