Something that a lot of people get wrong is what introvert and extrovert really means.
And introvert isn't someone who likes to be by themselves. An introvert is someone who gets their energy from alone time. Being around other people drains them. Whereas an extrovert gets energy from being around other people, and spending too long on their own will leave them lethargic and miserable.
Of course, I'm an introvert who hates everybody, so it's a moot point for me. (Kidding! Sometimes.)
I wonder sometimes how much our talents come from our personal tendencies. Writing is essentially a solitary task - yes, there are critique partners and events like NaNoWriMo, but at the end of the day, you still have to sit down and type x-ity thousand words onto the screen. And if you can hold a conversation while you think of reasons for people to explode things and fall in love, then my hat's off to you. Could you be an introverted theater manager, spending 14-hour-days directing people and overseeing everything? Maybe, but I'm not sure how.
There are probably degrees. Some people are probably fairly balanced between introvert and extrovert. Personally I'm a pretty extreme introvert; I need hours and hours of time alone to recharge after something so simple as a normal work day. And of course, a day is never as simple as just work - we come home and see family and friends and travelling royalty or whatever. In some ways I'm fortunate - I'm able to function on small amounts of sleep and I use my late-night alone time to get the bulk of my writing time. In other ways it's less fortuitous - I'm pretty sure "well rested" is a cruel myth.
Maybe there are some people out there that life comes easily for, but I don't think there are many. I think the "average" 9-5, family, friends structure of American life isn't a perfect fit for most people. We have this idea in our heads of what our lives "should" look like from TV and movies, and we forget that in real life we don't get convenient training montages with complimentary glasses. Things work differently in real life. People work differently. Life isn't a one-size-fits-all.
Tell me - what adjustments do you have to make?