The ancient Stoics were able to withstand (cheerily!) the most heinous imprisonments and tortures, and it must be incredibly comforting to know you can handle whatever life throws at you.
It certainly feels like God's trying to tell me something given that my at the same time I'm reading Hillbilly Elegy, a memoir of a guy who escaped the grinding poverty and feelings of helplessness that paralyze Appalachia. He writes of his time in the Marines:
The trials of my youth instilled a debilitating self-doubt. Instead of congratulating myself on having overcome some obstacles, I worried that I’d be overcome by the next ones. Marine Corps boot camp, with its barrage of challenges big and small, began to teach me I had underestimated myself…I’m not saying ability doesn’t matter. It certainly helps. But there’s something powerful about realizing that you’ve undersold yourself—that somehow your mind confused lack of effort for inability. This is why, whenever people ask me what I’d most like to change about the white working class, I say, “The feeling that our choices don’t matter.” The Marine Corps excised that feeling like a surgeon does a tumor.Also reading the Russell Kirk bio and he was a great devotee of the ancient Stoic philosophers. Christianity is Stoicism that can "touch the heart" and not just the mind, I've heard it said.