If you can practice patience in the traffic jam with a sense of humor approach or whatever approach you want to use, you are training for really major difficulties in your life. So, it sounds silly, but actually, it's true. If you're sowing seeds of aggression in the traffic jam, then you're actually perfecting the aggression habit. And if you're using your sense of humor and your loving-kindness or whatever it is you do, then you're sowing those kinds of seeds and strengthening those kinds of mental habits; you're imprinting those kind of things in your unconscious. So, the choice is really ours every time we're in a traffic jam.