Don't drink. Don't drink and drive. Don't drink and drive a motorbike. Don't drive a motorbike. If you drive a motorbike, please sign your organ donor card. And wear a helmet.
Don't smoke. Don't do street drugs. Don't do street fights. Don't play with bombs. Don't forget that helmet.
If you have asthma, don't have a cat.
Drive carefully. Avoid trees. Avoid animals. Avoid oncoming traffic. Cycle cautiously. Avoid cliffs and sharp rocks. Wear your helmet.
Pay attention. Never assume anyone else is.
Pay particular attention to your family. Tell them you love them. Tell them often. Tell them to wear their helmets.