Hear the same warning enough times and you stop hearing it. That’s when it’s most worth listening.

Repeated warnings get filtered out like any other constant signal, which is a problem when the warning happens to be true. Familiarity does not reduce the risk, it only reduces your reaction to it. The sentence you could recite from memory and no longer feel is the one most likely to catch you, because you stopped checking whether it applies today.

Pick one warning you have stopped hearing and take it seriously for a week. The helmet, the seatbelt, the thing your mum says about sleep, the deadline you always leave late. Act on it once as though it were new, then decide with evidence whether it deserved the shrug.