And when you have a house cleaner you always have a third party that's responsible for every issue: “that's the house cleaner's fault” (my in-laws have one and I'm pretty sure she's not responsible for a quarter of what gets attributed to her, otherwise she'd have gotten fired long ago)

Fully agree. This crucial bit of information should be spelled out to young people as not everybody realizes that (soon enough).

The biggest thing that changed my life wasn't a purchase, but randomly going down a philosophy rabbit hole on wikipedia one day after looking up different "razors" (https://en.wikipedia.org/wiki/Philosophical_razor).

One of the first things I learned was that most arguments in life seem to be mainly due to differences in people's definition of subjective terms, and not understanding how to communicate well enough to figure that out and then do something useful about it.