I have been polishing my piano and my ears
I hope you use different polishes. What you need to become professional is to be paid for it. An amateur does it for love, a professional for money.
to do that you have to be very good and very reliable.
Or, such as in the case of Gould, so astonishingly good that a little unreliability becomes an endearing character trait rather than career suicide.
It seems to me that there a lot more people who are more focused on the glamour of being a professional (after watching all those yuja, and khatia videos lol) than the music itself...
No, a professional does it for love as well as this clip states.
professional musicians play day after day and nobody could keep that up if they didn't like it.