You can't stop being a klutz if that's who you really are. What you CAN do is wear safety gear: elbow pads, knee pads, wrist braces, mouth guard, motorcycle helmet, and steel toed boots.
What would you tell the guy who is tempted to stand in the middle of the street at night, wearing black clothes, and messing around with his phone when the road is icy? (i actually saw this last night)