I've learned to not let traffic lights, lines, or waiting in general cause me any greif. I used to get upset when people would not "go" at lights or in traffic, but why? I realized that there is rarely if ever any place I'm going that 5 or even 10 minutes makes a damn bit of difference. Being relaxed and having flexibility in everything I do provides me with a great feeling of freedom.
Sitting in an air conditioned car, listening to music...or an audiobook, or talking with my friend/wife...is enjoyable if you relax and just chill out.