I enjoyed this book quite a bit, and its title is actually somewhat deceptive; while the book does advise you not to give a damn about a great deal of marginalia in life, Manson directs you to double down on those things you find important in life.  He brings in several anecdotes from his earlier years and shows how his missteps guided him to a better roadmap of giving Fs.

I used the advice of reading what I love- along with getting what I need.  I was looking for some grounding guidelines to cut out the BS from my life and distill all the various priorities and interests that I have into something more meaningful.