There are studies, which says that we spend more time working than doing any other activity, even more than sleeping.
The reason of that is because there is a cliché about the road to success:
WORK HARD -----> GET RESULTS -----> BE HAPPY
But nowadays, we know that we have better results when we work happier, not harder, which simbolizes we must find new ways to find our positivity. One form of achieve more positivity and consequently better effects, is to write three good things that happened in our life. If you do that everyday, you will discover a lot of things of your life which makes you happy.