I like arguing, and I love language. So, I became a litigator. I enjoy it and I would do it for free. If I didn’t do that, I would’ve been in some other type of work that still involved writing fiction – probably a sports journalist.
So what should you do? You will find your own niche. I don’t imagine you will need to look very hard. By this time in your life, you will have a very good idea of what you will want to do. In fact, I’ll go further and say the ideal situation would be that you will not be able to stop yourself pursuing your passions. By this time you should know what your obsessions are. If you enjoy showing off your knowledge and feeling superior, you might become a teacher.