Spot on mate, great post,
I have definitely seen my social status change over the years, back in middle I was some what the nerdy kid in the class, so if I had questions I would ask the teacher. Even if it was a stupid question or got me a stupid answer. As I progress socially and made more friends I become more hesitant to raise my hand. And in my senior year in my physics class (a class that gave quite some trouble ) didn't dare to ask any question, because I was afraid of the response I would get, and when I did ask a question this one time the teacher humiliated me. As a result I probably did worse in class than I know I was capable. I think that was an ultimate low, but as it turns out I think I have learned to accept myself. And this new confidence is based on that, "If I cared what you thought, I wouldn't have done it". Likewise there is the thought, you are never sorry for what you do, you are only sorry for its outcome.
I think more important than letting go of control, or loosening up, is learning to accepting mistakes, I think displays great confidence.
And mistakes make good jokes
I think I should join improv.
Welcome to the community.