I'm human and I've played my butt off for ten years. I'm not a loafer, I'm not a jerk, I'm a baseball player.
Ultimately, all human activities have as their goal the realization of happiness. Why, then, have we ended up producing the opposite result? Could the underlying cause be our failure to correctly understand the true nature of happiness?
If you are foolish enough to be contented, don't show it, but grumble with the rest.