Common experience is being confirmed by scientific research that when we are happy we are more productive. More surprising, perhaps, is that the inverse is also true: we are happier when we are more productive. Research by Daniel Sgroi and others at the University of Warwick has shown that happiness can affect productivity up to 12% or more. That's a real difference. (https://www2.warwick.ac.uk/newsandevents/pressreleases/new_study_shows/) What's more, productivity - even in