Earlier quoted context omitted.
The conclusion I think is missing from the 10k hours theory of mastery is that there is more than enough time in a full lifespan to master 4-6 things, depending on how good you are at managing your time. People who are only good at one thing may find that they aren't good at anything because of it. Don't neglect your passions, even if you don't see how you could ever make money from it, experience in other verticals…
We're making a huge mistake when we see mastery as an end goal. I played band in grade school, pushed myself hard, burnt out, etc. Learning classical piano as an adult has been a MASSIVELY instructive experience. Here's why: I'm never going to be a professional classical pianist. Ever. It's far too competitive, I'm probably not talented enough, and it's not worth the effort. Therefore, the ONLY reason I'm doing it is…
Agreed. If you look even more pessimistically at this, it's also how workers get exploited by owners. You've attached your identity to something, making it a giant lever. I can push on that pain point to motivate you or to neg you into accepting less money for the work.