You can probably master art in 10,000 hours but you won't learn everything. Michelangelo said probably a few weeks before he pasted "I'm still learning". Even as a master you haven't learned it all.
When I started out I wasn't so great. I worked hard and practiced to be where I'm at now. It's best that you work hard to get where you want. Those are the people that make it to the top anyways.