When someone asked a certain Zen Master how he was, he would always answer, “I’m okay.” Finally one of his students said, “Roshi, how can you always be okay? Don’t you ever have a bad day?” The Zen Master answered, “Sure, I do. On bad days, I’m okay. On good days, I’m also okay.” This is equanimity.
–Pema Chödrön, The Places That Scare You