I hope one day to have your frame of mind when it comes to things like this. I think sometimes in the middle of talking my mind with wander to how the other person perceives me, while concentrating on not stuttering so much. I think this can sometimes lead to a snowball affect, just making me stutter even worse. I've found that when I've been in situations were I don't necessarily care about stuttering when talking to close friends and family members (or when I am drunk lol,) I speak more smoothly. Good luck to you!