Stop Reading the News. Hook that in with The Subtle Art of Not giving a fuck, and finish with Turning the Mind into an Ally, and I find reflecting on all three has helped me to focus on what's important.

I no longer waste so much time on trivial unimportant nonsense.

https://www.amazon.co.uk/Stop-Reading-News-information-overl...

https://www.amazon.co.uk/Subtle-Art-Not-Giving-Counterintuit...

https://www.amazon.co.uk/Turning-Mind-into-Sakyong-Mipham/dp...

Stop Reading the News: A Manifesto for a Happier, Calmer and Wiser Life book:

https://www.amazon.com/Stop-Reading-News-information-overloa...

TL;DR: a PDF: https://gwern.net/doc/culture/2010-dobelli.pdf

Discussion: https://news.ycombinator.com/item?id=21430337