Not life changing, but my favourite is "The 100% correct way to do CSS breakpoints" by David Gilbertson, because it clearly and convincingly restores common sense in an industry quick to follow well established nonsense.
I have only 1 break point now. 960px. This is based primarily on content, not the screen/window size. After 20+ years doing web design and multi-media, I just got tired of fighting changes to trends without any value for those changes.
https://medium.com/free-code-camp/the-100-correct-way-to-do-...