Somehow this feels fake. You're telling me people living in frozen tundra Russia are more relaxed and comfy in life than the Swiss or Bhutan or Scandinavia. You know, places that have financial stability at least?
In a sense, yes, but how strongly someone feels their emotions is only something they can decide. I agree that in the grand scheme of things people in more developed countries like the United States generally have an "easier" life than someone in a country ravaged by civil war, like Syria, but that doesn't change the fact that people are willing to kill themselves over their lives that to someone else may seem easy.
Alternatively, here is a site that has analyzed it for you: https://www.atlasandboots.com/travel-blog/most-stressed-countries-in-the-world/
*Some countries were excluded from the report due to insufficient sample sizes.