Ah Stoics, they’re the best at turning being a resigned quitter into dignified philosophy.
Stoicism because popular with Roman elites specifically because it didn't ask the adherents to quit anything, but simply to adapt themselves to whatever adversity they might face[1].
[1] https://www.exurbe.com/stoicisms-appeal-to-the-rich-and-powe...
The Stoics inherited the Cynics attitude that death isn't an evil. If worse comes to worst, you can always just fall on your sword. They used to say that the door is always open. Marcus Cato weaponized this fact to rob Julius Caesar of complete victory: Caesar couldn't demand his submission if he fell on his sword first. They found him and patched him up. But he ripped out the stitches and disemboweled himself with his bare hands.