Finland's immigrants are just as happy as its natives

This year, for the first time, the World Happiness Report asked immigrants to take part in the survey, and the happiness of the immigrant populations were virtually identical to the results for the overall population, with Finland at the top. That is to say, both Finnish-born people and those who migrated there are equally happy. This is interesting because it essentially refutes the theory that happiness is intrinsically Finnish.

“Looking at immigrants’ happiness shatters the idea that Nordic countries are closed, homogenic societies,” Helliwell said. “If happiness is to do with something in the Finnish psyche, it’s equally available to someone from Bangladesh. So it’s got to be more about the way the country is run.”

But it could be feedback and assimilation. The country is well-run, which engenders a Finnish mindset in newcomers, which leads to contentedness, which perpetuates a well-run country.

When these happiness evaluations are released, Wiking says there is always a great deal of curiosity about the top-ranked nations. We are naturally fascinated by people who seem to achieve happiness, this great emotional state we all aspire to, and even more so by the idea of an entire nation of people who live in glee. There are fewer questions asked about the nations on the bottom of the happiness list – places like Syria, Liberia and Afghanistan – because unhappiness is obvious. If we believe there is some sort of secret to Finnish happiness, perhaps the closest thing is to live in a society that emphatically values trust and generosity.

A big problem in the west is that there's quite a lot to make people justifiably angry and afraid, which makes it very hard indeed to get them to be trusting and generous.
http://www.bbc.com/travel/story/20180617-why-the-finns-dont-want-to-be-happy