A wonderful story from my Aunt::
I waited patiently in line at Starbucks. There was a kind-looking man placing his order. He looked at me (I was next in line) and asked, "Are you by yourself?" I said, "Yes." He said, "Let me buy you a cup of coffee. I will ask you just one thing in return. Tomorrow morning when you wake up, please wake up with a smile." I smiled and said, "Sure!", and then thanked him. He paid for it and left. Wow...