The following is from 'Heart Advice, Weekly Quotes from Pema Chodron':
"If you can practice patience in the traffic jam with a sense of humour 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 are sowing seeds of aggression in the traffic jam,
then you are actually perfecting the aggression habit.
And if you're using your sense of humour and your loving-kindness,
or whatever it is you do,
then you're sowing those kinds of seeds and strengthening
those kinds of habits;
you're imprinting those kinds of things in your unconscious.
So, the choice is really yours every time you are in a traffic jam."