Aggles and I have endured several stretches of grueling times together. When we were small, I took delight in torturing her. And then later when Mom was ill we went through some impossible times. This might be why we've been doing our own Science of Happiness Experiment for a few years now. Every night we email each other the best thing that happened that day. Just a word or phrase. Even on the very worst day there can still be a slice of pizza in the mix.