What's Your Kindness Story?

I had been on a trip and was almost home but was almost out of gasoline, so I stopped at a station I don’t normally stop at. At the pump ahead of me was a Carmelite Nun. I paid for my gas at the pump but then I went inside to pay for the Nun’s gas as well. Just as I was about to leave, the gas station’s worker came running after me telling me I had paid too much. I quickly explained what I had done and that I did not want the Nun to know it was me, I just wanted to be a blessing for her.