Part of stoicism is the practice of thinking about (your impending) death, often called memento mori[0], which directly contrasts any focus on ephemeral things such as wealth.
It's not surprising that this very contrast became a rather popular type of painting, called the Vanitas[1]. Two of my personal favorites:
1. https://en.wikipedia.org/wiki/Memento_mori#/media/File:Still...
2. https://en.wikipedia.org/wiki/Vanitas#/media/File:1628_Claes...
Memento mori / Vanitas also escalated a bit in the 15th century, when we arrived at the Danse Macabre[2] (these days probably mainly known for that one famous Saint-Saëns composition). My favourite Danse Macabre painting was destroyed in a bombing, but there's still a high resolution photograph of it: https://upload.wikimedia.org/wikipedia/commons/e/e1/Totentan...
[0] https://en.wikipedia.org/wiki/Memento_mori [1] https://en.wikipedia.org/wiki/Vanitas [2] https://en.wikipedia.org/wiki/Danse_Macabre
Heck you can invalidate all philosophy by being a metaphysics skeptic.
It's just not particularly useful.
From the article - I like this concept here.
"Treat your station in life with indifference. Not contempt, just indifference."
Don't let yourself be defined by what you have achieved, because eventually, it will be taken from you - in death, in old age, in sickness, in unluckiness
Friedrich Nietzsche, Beyond Good and Evil, Aphorism 9