If cold weather and a lack of sunlight in winter are enough to get you down, chances are you're not Finnish.
The World Happiness Report published on Wednesday puts Finland top out of 156 countries ranked by happiness levels, based on factors such as life expectancy, social support and corruption.
Thailand, by the United Nations' standards at least, isn't such a happy place. The kingdom came in at No.46, down 14 places from last year's list.
People are happier in the United States (18th), UK (19th) and even Mexico (24th), a country notorious for its drug wars.
Closer to home, Singaporeans (34th) and Malaysians (35th) both came in ahead of Thailand.
The UN's report contradicts another survey published just last month, the Bloomberg Misery Index, which found that Thais were the world's least miserable people.
So, it's the least miserable but the 46th happiest. This doesn't reflect well on the military regime, whose official motto at the time of the May 2014 coup was "Returning Happiness to the People."
Finland has emerged as the happiest place to live even though limited sunlight in winter and low temperatures are often blamed for high rates of depression.
So what could explain their placing at the top of the ranking?
"Well, our politics and our economics . I think the basics are quite good in Finland," said Sofia Holm, a 24-year-old resident of Helsinki, the Nordic country's capital.
This year, the annual report published by the UN Sustainable Development Solutions Network also evaluated 117 countries by the happiness and wellbeing of their immigrants.
In 2015, more than a million migrants entered Europe. A few thousand made it to Finland, a relatively homogeneous country.
Finland's largest immigrant groups come from other European nations, but there are also communities from Afghanistan, China, Iraq and Somalia.
John Helliwell, a co-editor of the World Happiness Report and professor emeritus of economics at the University of British Columbia, noted that all the countries in the Top 10 scored highest both in overall happiness and regarding the happiness of immigrants. He said a society's happiness seems contagious.
"The most striking finding of the report is the remarkable consistency between the happiness of immigrants and the locally born," Helliwell said. "Those who move to happier countries gain, while those who move to less happy countries lose."
Europe's Nordic nations, none particularly diverse, have dominated the index since it began in 2012. In reaching No.1, Finland pushed Norway into second place.
Rounding out the Top 10 are Denmark, Iceland, Switzerland, the Netherlands, Canada, New Zealand, Sweden and Australia. The United States fell to 18th place from 14th last year.
Meik Wiking, CEO of the Copenhagen-based Happiness Research Institute, said the Nordic countries"are doing something right in terms of creating good conditions for good lives," something newcomers have noticed.
He said the happiness revealed in the survey derives from healthy amounts of both personal freedoms and social security that outweigh residents having to pay "some of the highest taxes in the world."
"Briefly put, (Nordic countries) are good at converting wealth into wellbeing," Wiking said. The finding on the happiness of immigrants "shows the conditions that we live under matter greatly to our quality of life, that happiness is not only a matter of choice."
The United States was 11th in the first index and has never been in the Top 10. The report cited several factors to explain its falling ranking.
"The US is in the middle of a complex and worsening public health crisis, involving epidemics of obesity, opioid addiction and major depressive disorder that are all remarkable by global standards," the report said.
It added that the "sociopolitical system" in the United States produces more income inequality - a major contributing factor to unhappiness - than other countries with comparatively high incomes.
The US also has seen declining "trust, generosity and social support, and those are some of the factors that explain why some countries are happier than others," Wiking said.
