Multipliers of the poverty line have been mentioned here as an indicator of happiness. I think it got deleted because the entire post was part of a heated back-and-forth but I wanted to address the main point of it.
We can use the federal Obamacare numbers for a reasonable measure of the poverty line: https://www.healthcare.gov/glossary/federal-poverty-level-FPL/
So for individuals, 1x is basically 3/4 time federal minimum wage, 2x is $12/hour, and 4x is a solid $45k job. That all seems relatively attainable, and in a low cost-of-living area you could live quite alright on $45k alone. Not quite so in places like SF Bay Area / LA / NY / other major high COL hubs, where $60k is barely enough to get by. Now if you want to have a family of any sort, that starts to complicate things. A family of four (i.e. two children) will require something like $100k between all working family members to get to that 4x point, and again that’s not counting higher COL areas. Add in other expenses - unexpected illness, debt troubles, legal expenses, student loans that need repaying, one spouse not being employed - and you start to reach a point where you need to be solidly middle class to really be able to afford that kind of life in the long term. The practical cutoff for that “4x poverty line” can start to be in the six figures, which is pretty consistent with what most people would call a financially stable point, after which more money starts to just be running up the score. And it is in fact very likely that people wouldn’t manage to reach that level of career earnings for a long time if they choose a less lucrative career path. So for most career paths, the money question is actually pretty relevant to overall happiness.