“You don’t have to be nice to me just because you’re upset.”
Of course I do. Of course we all do. That’s exactly when we have to be nice.
You will be upset in your life. If you let it rule you, let it cause you to be unkind, you have lost yourself. You don’t need to ignore the source of the emotion; you can, and should, discuss it. But for the love of humanity, be kind.
The Opportunity Machine 