Someone once told me that legendary Sisyphus was not punished, but in fact, rewarded by the Gods by having to push up the giant boulder uphill for eternity. That someone even kept a Sisyphus man and boulder miniature replica on his desk. You can read about the various interpretations of the legend of Sisyphus, most of which see terrible punishment of unrewarded labor. What if Sisyphus boulder wasn't a horrible sweatshop job but the inevitable way of moving forward. Albert Camus concluded "one must imagine Sisyphus happy" as "The struggle itself towards the heights is enough to fill a man's heart." (Wikipedia)
King Sisyphus wasn't just accused of any violation: he stood guilty of assuming his cleverness surpassed that of mighty Zeus himself. Punishment is not punishment until one agrees to make it so. I think Sisyphus was more astute than given credit by most historians and scholars, with the exception of Camus.
If Sisyphus can push forward, what stops you from moving ? Have you "reached the top" ? There is another top. Improvement never stops. Improvement never fails.
And since it is MLK day today,
"Keep moving, even if all you can do is crawl."