The “Ozymandias Collossus”, Ramesseum, Luxor, Egypt, by Charlie Phillips

Ozymandias
By Percy Bysshe Shelley

I met a traveller from an antique land
Who said: Two vast and trunkless legs of stone
Stand in the desart. Near them, on the sand,
Half sunk, a shattered visage lies, whose frown,
And wrinkled lip, and sneer of cold command,
Tell that its sculptor well those passions read
Which yet survive, stamped on these lifeless things,
The hand that mocked them and the heart that fed:
And on the pedestal these words appear:
“My name is Ozymandias, king of kings:
Look on my works, ye Mighty, and despair!”
Nothing beside remains. Round the decay
Of that colossal wreck, boundless and bare
The lone and level sands stretch far away.

Wikipedia

Look on my works, ye Mighty, and despair!

It is said an Eastern monarch once charged his wise men to invent him a sentence, to be ever in view, and which should be true and appropriate in all times and situations. They presented him the words: “And this, too, shall pass away.” How much it expresses! How chastening in the hour of pride! How consoling in the depths of affliction!

Abraham Lincoln, Address to the Wisconsin State Agricultural Society, Milwaukee, WI, September 30, 1859

This Too Shall Pass Away, by Ella Wheeler Wilcox

Schadenfreude: pleasure derived from the misfortunes of others.

Mockery, truculence, and minimalist living are best, then enjoy the decline.