I had such a severe stutter i couldn't get a word out over the phone the moment they picked up, I was choking.  Then in gatherings I was too tired to even try from the stutter and fear of just introducing myself.  The positive mindset and doing it anyway, not dwelling on the stutter is something I write about here because it worked for me when nothing else did.  Eventually I had to conquer my inner fears to get past all of it.  It was all the same, phone convos, meeting people, etc, the results were the same for everything, no one size fits this and another fits that.