For me it was “buy high quality pillow” because you sleep for one thrid of a day etc. I needed a new pillow anyway so I came to the store and bought the best they had. And it was … ok. Like it’s a fine pillow but my sleeping haven’t improved really, it’s basically the same. So I was disapointed :(
So, which life pro tip disappointed you?
You also get diminishing returns.
If you spend £400 on a bike instead of £200, it might actually be nearly twice as good, but spending £2000 doesn’t mean it will be ten times as good, when you’re in to bikes that cost £10k+ you’re talking about fractions of a percent better than the one that costs many percent less.
The top of the range items are good for enthusiasts, but almost always not worth it for casual consumers.