People are happier when they have better relationships, not better things.
Family and community have (evidentially) more impact on our happiness (as measured) than money and health, once you hit a minimal threshold.
Subjective ratings of happiness are only more consistently high for those people who have good relationships. Those people with riches and material wealth don’t really report measurably higher happiness than those with near average wealth.
In The Little Book of Hygge this principle is used as evidence of the importance of sharing “Hygge” with other people.