The Subtle Art of Not Giving a F*ck by Mark Manson

Based on the title, you can probably tell that this book has a LOT of "language" in it, so if that offends you, this is not the book for you. Basically, the lays out the idea that we all care too much, especially in this age of social media. And he seems to present it as a new thought except that this is actually an ancient idea; I would liken it to Aparigraha or "nongreed," basically not wanting what other people have.
Is this a self-help book? Pretty much. Is it disguised by a bunch of fucks and a few shits thrown in? Pretty much. But it's actually not horribly written and has some good gems. If you have read a lot of books like this, there is nothing new. But if you're new to the self-help game, this would be a great starter book.