"The Elements of Style" belongs to that 1% of books that are truly able to change the way you think (and write).
I tried to apply what I learned in "The Element of Styles" and "On Writing Well" to my company blog: https://medium.com/plainflow/how-we-write-at-plainflow-7e994...
E.B. White, the 'editor', was one of the best essayists around, but he didn't particularly obey the rules in his own book.
It does have its critics but I think it's a very useful guide for most writers, and being a small book it is easily referenced and has remained useful to me to this day, much like K&R was when I did "C" programming.
https://www.amazon.com/Style-Lessons-Clarity-Grace-12th/dp/0...