Preceptor.
n. A teacher; an instructor.
I think, if circumstances had gone differently, if I hadn't seen what I saw or ran when I did; I think, I'd have enjoyed being a teacher then. And not just a teacher, but The Teacher.
I'm always teaching, after all. Telling my friends how to do new things, regaling them with information about the places we visit, showing them interesting paths to tread and new ways to grow.
Then again, teachers and doctors aren't all that different. Both save people. While doctors save the bodies, giving way to life; teachers save the soul, making sure life is worth living.