From and OLD one....I dislike the old saw,
Those that can do, those that can't, teach....
Somehow it seems so unfair, as we all need teachers...for ALL of lifes learning. They are the ones that bring us the future...and I speak to this as it was my personal choice, and was not even using my first love, the piano...I speak to support my desire to teach, which I always had, and NOT really piano,...but in choral music.
Perhaps I was not dedicated enough, as I did start at age five, so it was surely in time....I was never solid enough in my desire, other than MUSIC IN GENERAL...So I ended up a choral director in high school, and for a time in college...BUT I was and still am terribly happy with my career, now well past...I view it as a success.
My point is that for performance....You BETTER be totally in love with your instrument and dedicated beyond normal human response...There are a LOT!!! of great pianists out there; I know a few personally, and remember how I behaved in learning, when they were TOTALLY DEDICATED....Be Totally dedicated!!!!
If not, you can do worse than teach others....but you must have dedication for teaching as well...
John Cont