you have gotten so much good advice in this thread. I'm an introvert, it took years of feedback before what I thought was normal behavior, I learned was pushing people away. In college, a few people told me I was an ice queen with men and people thought I was a "stuck up cheerleader", which could not possible be more far from the truth. It wasn't hard to put on game face during college, a few drinks, gushing with the girls, whatev, flirt, it worked.
Then in my first job, in some ways it was a benefit, I was very calm, knew how to react in emergency situations without freaking out. So I got promoted to be in charge of a shift when I was barely out of school. Great, I did not want this but I was too introverted to figure out how to say no and not jeopardize my career. So I did it, it forced me out of quietly going about my business. I did not like it, especially because at 22 I still looked 16 and the people I were supervising were older than my parents, I was trusted to give them clinical advice?? And it was a vey busy floor, of course, understaffed so it was a bitchfest daily. I learned to let that go on for a few minutes and then enforced assignments and time to get going. One day the unit secretary asked me when did I graduate, how old was I, experience, etc? I figured everyone already knew, first job, just out of school, etc. She told me she had no idea, had assumed I was in my late 20s with some, etc. So take whatever feedback you get and use it as essential information to begin to understand how/why people see you in a certain way.
Thankfully, with patients/families one on one, I think being an improving introvert helped because I would listen to the whole "story" without cutting anyone off or sliding my advice in when it was not asked for and then wrapping it up with "what can I do to help?" I came to love all these interactions and stories over 23 yrs. And it helped me in social situations because I was a good listener and could draw others out, leaving my life mostly private.
I still tend to be an introvert but I feel able to read a situation and get a bead on what behavior would be best.
Did you ever try the Meyers/Briggs test? It gives you you're personality type in several sectors and it was helpful to me. They are all over the internet, just check that it doesn't look like a whackadoo site. There should be references to Jung and a history of the test, etc. You won't get a real one, or at least, last time I looked I couldn't find one but that was years ago. You get a shortened version and that's ok. Good luck!