I know this because, in a bit of a stinking mood, I stopped the car to let an old lady cross the road the other day and she gave me such a beaming smile. Admittedly, she was going soooo slowly that if I hadn’t then I would probably have killed her but that’s not the point. Cheered me right up how happy she was and how ridiculously slowly she was walking. You know, she is probably out there now. Hmmm. Oh well, that can be someone else’s good deed..