“On the face of it, it’s rather odd that there is an International Day of Happiness. Don’t we live every day trying to be happy?
Well, not really. As a professor of behavioural science at the London School of Economics and Political Science (LSE), I spend a lot of my working life trying to work out what makes people happy. Often, that means looking beyond what they say makes them happy, and towards the evidence base provided by research, which paints a different picture.”