The man who can drive himself further once the effort gets painful is the man who will win.
All earthly delights are sweeter in expectation than in enjoyment; but all spiritual pleasures more in fruition than in expectation.
Imagine if you had baseball cards that showed all the performance stats for your people: batting averages, home runs, errors, ERAs, win/loss records. You could see what they did well and poorly and call on the right people to play the right positions in a very transparent way.