Learning is finding out what you already know, Doing is demonstrating that you know it, Teaching is reminding others that they know it as well as you do. We are all learners, doers, and teachers.
You are led through your lifetime by the inner learning creature, the playful spiritual being that is your real self. Don't turn away from possible futures before you're certain you don't have anything to learn from them.
Learning is finding out what you already know.
That's what learning is, after all; not whether we lose the game, but how we lose and how we've changed because of it and what we take away from it that we never had before, to apply to other games. Losing, in a curious way, is winning.
You teach best what you need to learn.