I am an INFJ personality according to the Meyers-Briggs personality typing metric. When I read the description, it's always pretty amazing to me how answering 50 questions allows such an accurate description of my personality.
My introversion often comes as a surprise to people who know me from church or school because I don't come across as an introvert. What they don't know is that social interaction is like a workout for me. I can manage social situations gracefully, to a point. When I hit that point, it's time for me to go home, spend some time alone, or even take a nap. Don't get me wrong, I love seeing my friends and talking to them, it's just not energizing for me like it is for extroverts.
It has taken me a long time to figure out how to balance a life that requires a lot of social interaction (through church, grad school, and teaching) with my need for time to decompress. One of the best developments of our move to the Big City was my new hour-long commute. It's the perfect time for me to get into my head and sort through what needs to happen during the day or to unwind after a long day.
Are you an introvert or an extrovert? How do you accommodate your personality?