Last month I heard about 100 Happy Days from A Beautiful Mess and decided it was exactly the mood-boosting, photo-challenge I needed. I even managed to get a few people from work in on the act.
Certainly some days are easier than others but I definitely find myself looking for more positive things during the day, rather than focusing on the negatives.
You can join in at any time, for more information and to sign up visit 100 Happy Days.