This would be "humanism". There were lots of enlightenment strains in the humanist movement, but overall the humanists championed the individual as a powerful entity.
Changed peoples perspectives and made them think and act differently, like the idea of christianity brought them comfort, if they weren’t having a good life on earth they’d be promised an afterlife, and It also increased people’s happiness.
Uncle Sam and The Statue of Liberty. The only 100% Loyal Americans
Nordic countries rank so high on the happiness report because they have things like free education and healthcare, low crime rates, cushy social security nets, a relatively homogeneous population."We find happiness in our own pursuits," like our professional work and passions,
So that when they would trade for good they would save time and money.