While I believe you're ultimately correct and it's important to recognize that at the macro level, that type of thinking is incredibly caustic and defeatist at the individual level.

We should take every opportunity to make life as fulfilling as possible, even if we don't always succeed due to things outside of our control. (Note: this is an abstract claim for what you want, I'm not saying being extroverted is more fulfilling than being an introvert.)

I personally avoid to think about my self with labels about what "immutable" things "I am". Like "he is tall", "he has Z skin color", "he has 9 fingers", "he has brain type X", "he is thin", etc.

I do care about what values, passions and friends I have, and I have tried to find a set that is consistent.

I do not mind if someone tells me "I am an introvert", even if I do not find it extremely interesting. But if he says "I am introvert and will be unhappy all my life because I can't change that", I can't avoid thinking that he is focusing on something that does not help.

Choice is a spectrum, some things are more choosey than others. My height is not very choosey, what I eat for lunch is somewhat choosey given the choices around me, and what I say is very choosey.

Certainly, what you find comfortable is somewhat choosey. Over time it changes and evolves, from your own experiences. The more you do things, the easier and more comfortable they become.

Maybe it applies to you too. Have you tried ?