That is interesting. I think you are probably right- people’s perspective shifts with their circumstances like a happiness Overton window for the self, and we don’t necessarily become happier or unhappier people, just what triggers happiness/annoyance etc changes. I remember a friend of mine from law school’s very wealthy boyfriend effing and blinding once because he had been to the supermarket and they didn’t have rosemary. That’s just an unhappy, angry guy, and the fact that his circumstances in life meant that the worst part of his week was no Rosemary didn’t mean he had no worries, It just meant that filled the spot of “big problem of the week” in his head.
There are also some studies on how happiness broadly increases alongside salary/income up to a certain amount and then plateaus-the extra things you can get after that point don’t increase overall happiness in the same way. I think the figure was $70,000 but I forget honestly. I think that has more to do with a reduction in financial stress/anxiety which is linked to happiness but perhaps a slightly different concept.
Probably best for a different thread.