Letters from a Stoic is about how to stop feeling unsatisfied in life or worried what people think. Seneca says we must first reduce our desire for pleasure, wealth and social approval. Then we can become less fearful and hesitant with techniques like remembering that we're all gonna die.
Can't Hurt Me is a guide to building mental toughness, and it's also the motivational life story of David Goggins. When he was young David survived abuse and racism, but later he transformed himself into a Navy SEAL, ultramarathon runner, and world record holder.
The Subtle Art of Not Giving a F*** is like your smart but impolite friend explaining some great lessons from philosophy. Mark Manson shows how to live by your values so you can act with less hesitation, do what's most important to you, and stop worrying what people think.
Meditations shows how to become more self disciplined, stop caring what people think, and withstand life's emotional storms. Marcus Aurelius was a powerful Roman emperor and great Stoic philosopher. He wrote down all these thoughts in a private journal to himself.