As a reader, you’re often inside one or more character heads, so you know what they’re feeling, even if they can’t exactly say it, or they say it so obliquely that the other characters don’t catch it. Readers are frequently reminded of the gulf between what people say and what they mean, and such moments prod us to become more attuned to gesture, tone, and language.

What I suddenly understood was that a thank-you note isn't the price you pay for receiving a gift, as so many children think it is, a kind of minimum tribute or toll, but an opportunity to count your blessings. And gratitude isn't what you give in exchange for something; it's what you feel when you are blessed--blessed to have family and friends who care about you, and who want to see you happy. Hence the joy from thanking.