The next time you’re feeling stress or discomfort, ask yourself whose business you’re in mentally, and you may burst out laughing! That question can bring you back to yourself. And you may come to see that you’ve never really been present, that you’ve been mentally living in other people’s business all your life. Just to notice that you’re in someone else’s business can bring you back to your own wonderful self.
— Byron Katie, Loving What Is, p. 3