Psychology says adults who keep the gas tank perpetually above half aren't overcautious; their body learned in childhood that running low meant something bad was coming, and topping it up is a promise they still keep

There’s a moment that might be familiar to you: you’re driving home, the fuel needle slips past the middle, and something in you stirs quietly. Not urgency, more of a nudge. The next exit has a station. You don’t need it, but you pull in anyway.

The tank had 180 miles left, and you fill it to the top.