 to that person who did you a favor. Do not be ungrateful, but grateful. Show your gratitude by writing that thank you note. Now it's up to me. I can say, nah, forget it. I don't want to be grateful. I kind of like being ungrateful. It's more fun. And I don't like writing thank you notes. Or I can say, yeah, you're right. That's the right thing to do. And I choose to be grateful and to show that gratitude with the gesture of a note.