I am a serious extrovert! Nobody is just one or the other, introvert or extrovert. But I am almost all extrovert and that can be super challenging when most of my world is introverted.
Back before I left my corporate job, I had the opportunity to participate in a leadership seminar that included a full-fledged, get input from lots of people, answer a ton of questions, Myers-Briggs assessment. Most folks have some familiarity with the indicator tool and have often taken some abbreviated version. What I learned during my assessment was that versions given by trained professionals provide results that indicate the range or scale of each pair so it is possible to be nearly equally both – introvert AND extrovert. Not every person has to fall into the introvert vs. extrovert debate.