I always liked the feeling of being greeted by a random stranger, or even just a smile. I don't know but sometimes it gives me a good feeling that everything would be perfectly fine throughout the day. But then I suddenly realized that why would I wait for someone I don't know to say 'good morning' or smile at me if, in fact, I CAN BE THAT RANDOM STRANGER TO SOMEONE ELSE. Why would I wait to receive the 'good feeling' if I can give it myself.