I am a rather extreme introvert, and that's never been accepted in my family. So, I learned how to appear to be an extrovert, but it's exhausting when I have to do so. It's only in the last few years, with the help of my introverted therapist, that I've learned to accept that it really is okay to be an introvert. The culture in the US, and most especially US corporate culture does not really encourage introversion, so it can often be hard to accept that aspect of my personality, and to allow it to have reign rather than pretending all the time.