On The Meditations of Marcus Aurelius (ca. 180 C.E.) plus Ryan's The Daily Stoic (2016).
What does Stoicism look like in practice, in both ancient and modern contexts? You might think that eschewing the shallow, out-of-our-control trappings of fame and wealth in favor of personal cultivation would make one unambitious, but Ryan uses Marcus as a prime example of how to be a Stoic while trying to accomplish great things.