I was the epitamy of the shy introvert engineer who couldn't talk or make conversation with anyone. This was aided by being a world class stutterer from an early age on. I'd have to say that over something like the past 40 years I've made no friends and have grown apart from all that I have had besides my wife. Whatever 'connections' I've made to others were fleeting. For whatever reason people come into my life and then vanish. You call, nothing back. Yet these same people would go on about talking to this person or that person they knew from 20 years ago. It gets discouraging really fast.
Even in the safe confines of my TG support group I am a mess. This past weekend was the annual group outing. I have passed on about every one because I am incapable of having fun. It's sad. I wish I could, just have no idea how to without a muse. In many ways I chalk it up to still having no clue as to who the real me is after decades of being an actor.
Early on in my career for some odd reason this shy introverted engineer got volunteered to go to trade shows to help work the booth and later to go on sales calls with the sales people. Talk about being out of your comfort zone! With small groups of people I know, I have plenty of anxiety. Groups of STRANGERS!!!! Forget about it. Still, I had no choice but to go.
One 'Talent' I honed thanks to being trans, is being a chameleon. I did a lot of blending in around guys to be accepted. I became a sort of actor. I could move between the geeks, the motor heads or whatever, aside from the jocks. Even I wasn't that good.
So when in 'Sales' do as the sales guys do. I sort of worked out a sales persona able to talk up the customer, figure out what they really needed vs wanted. Going into that 'Mode' helps. Still, like I said, no real friends, just people I talk to.