I think it's different for each person. For me, I stutter less around strangers. Because I tell myself that strangers are not aware of the fact that I stutter. so, I don't have to worry about them expecting it, and thus, stuttering anticipation becomes useless (and pointless basically), and thus, it doesn't become a self-fulfilling prophecy. Also. The thing is. strangers usually don't have a certain opinion formed about my stuttering. so there's less pressure and I don't have high expectations of myself. This makes me stutter less because I'm not constantly thinking that stuttering is going to happen, after all, I don't have a stutter identity (of image of myself stuttering) around strangers, and thus, I don't prioritize a stutter mindset or stutter state where I'm constantly expecting that stuttering is always looming around the corner no matter what even during fluent speech.