Great players don't work a lot; they spent little time on fixing their weaknesses, while simultaneously keeping themselves happy and healthy by going to school, exercising, taking breaks, & enjoy other hobbies, too.

That way, they avoid tilt, burn-out, & recover faster from those things, too.

Don't work hard; work well:

The more you work, the worse you become; the less you work, the better you become (Sometimes, not working accelerates progress. Believe it or not).

Endou + Fubuki + Kidou + Gouenji = Perfection: