As we traveled throughout China we heard 'watch your step!' many times each day. Uneven footpaths; busy road crossings; paths through caves or gardens; the Great Wall, embarking and disembarking from boats; all were accompanied by the advice to 'watch your step'. Everybody did watch their step, and we completed the trip accident-free.
However, I didn't succeed in remembering this advice once I'd returned to Australia. After a couple of days back in Sydney I slipped and fell and broke my hip.
I'm now well on the way to recovery with a bright shiny new artificial hip. But I do wish I'd watched my step.