This is the tenth anniversary of the World Happiness Report. From its first year, the report has had a large and growing readership – reaching over 9 million in 2021. It has been widely cited. But more important has been the message the Report has carried. The true measure of progress is the happiness of the people; that happiness can be measured; and that we know a lot about what causes it. Given this knowledge, it is now possible for policy-makers to make people’s happiness the goal of their policies. And each of us can live a wiser life.