Well, since I was 13 when I started riding in '65, I probably wouldn't have listened, but if it had been later when I would have, probably something like this:
ALWAYS treat the road and obstacles in and around it as the playing field and the bike and its controls like the instrument of a sport you love being good at, one in which you ALWAYS focus, ALWAYS pay attention and ALWAYS do your very best to perform at the top of your game. Just as you'd never go to bat half assed, or to a ski race without trying to make every gate, take pride in being the best you can be and enjoy everything about the sensation, accomplishment and perfection of carving your tires across exactly the line you intend. Like pitching a perfect game, the perfect ride is one in which you never made a mistake, never crossed a yellow line you didn't intend to cross, one in which you didn't survive just because you were lucky no one was coming the other way when you blew that corner.