I really highly recommend it myself. A bit of history of Stoicism, but also a lot of practical advice about how to put it into practice in modern times. (Always going back to the key Stoic thinkers.)
Tim Ferriss also talks a lot about stoicism on his blog.
When I saw it on the personal mba, saw it with a note of 10/10 in Sivers’s books notes, and understood it was about “the weird thing Tim Ferriss was talking about constantly” I knew this book was worth my attention. I haven’t been disappointed, even without practicing the principles depicted in the book as much as I should it as substantially made my life better.