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?
I've replaced the engine in an '06 Civic Si after the timing chain lifter tensioner failed, the timing skipped, and the valves kissed the pistons.
It also ended up having some pretty gnarly electrical issues.
law of large numbers, maybe
I know just enough about engines for “valves kissed the pistons” to make me laugh in horror.