Samsara refers to the wheel or circle of unhappiness, a habit of running around in circles, chasing after the same experience again and again, each time expecting a different result. If you’ve ever watched a dog or a cat chasing its own tail, you’ve seen the essence of samsara. And even though it might be funny to watch an animal chase its tail, it’s not so funny when your own mind does the same thing.
Mingyur Rinpoche
from the book “The Joy of Living: Unlocking the Secret and Science of Happiness”