Today’s advice is about finding shelter from the storm … so that you can gather your thoughts and think calmly about your next investing move. Perhaps you’re already calmly plotting your next move. If so, good. More likely, however, is that you’ve been worrying about the effect that the troubles in Japan will have on various industries—from automotive to electronic to medical to nuclear—and trying to figure out which stocks will win or lose as a result. And I think that’s a waste of time! The fact is, you don’t need to figure out which industries will win or...