A wise teacher told the following story as we held a pose in a Yin yoga class. I believe she credited the story to Eckhart Tolle, but I'm not 100% sure.
Imagine, she said, a quiet duck pond. Suddenly two ducks get into a squabble. There's a lot of squawking, wing flapping and splashing. What a show they put on! Then, just as suddenly as it began, the two ducks turn and float away in opposite directions. They may ruffle up their feathers one last time, give a tail flick, but that's the end of it. The incident is over. Fini.
Now, consider two humans in a squabble, our teacher suggested. There are raised voices, fist shaking, aggressive body language. Suddenly the humans turn and stomp away from one another. But is it over? Oh no. In each of those human minds there are voices still raised in anger .... "Can you believe she said that?" "The nerve of him!" "She'll never get away with that!" "He is such an idiot!"
The human mind finds it so hard to simply 'let go'.
Oh, the things we can learn from ducks.