Just the fact of having to remember what happened to us good every night, especially when we had a day "rotten" THE find that little thing that all was not 100% black, it's perspective, I like to do in bed to fall asleep with a smile on lips :). For me it is the medium that is well suited for 3 KIFS day Florence Servan-Schreiber for example, it is the same principle of positive psychology. I did not give it 5 stars because the quotes are in English, I'm not angry with but I do not always understand everything, it is to learn, but it cuts me some basic objective.