Every time you pick up a sharp tool or start up a power tool go through the mantra, "Where's the blade; where's my hand."
Not exclusive to WWing, but one I learned from a friend, who said his kid's scout troop used it
"Beware the blood zone"
Consider where that tool will go if it slips, your hand slips, or the cut is complete.
Applies to almost any tool - knife, axe, hatchet. machete, chisel, screwdriver - and to every body part (yours or someone else's).
"Measure twice, cut once"