What’s the last thing you checked that saved you?

I was knee-deep in a panel swap yesterday, same old routine—double-checking lockouts, verifying isolation. Then I saw it: a single wire still live, barely visible behind the busbar. I’d been about to touch it. My hand froze. That safety check? The one I do every time like it’s ritual, not just procedure? It stopped me. Now I’m wondering—what’s the last small thing someone else did, or you did, that actually kept you from disaster? Not dramatic, just… quiet. Real.