Try some stoic books maybe? There are ancient ones like [0]. I don't know any moderns ones. [0] https://en.wikisource.org/wiki/Moral_letters_to_Lucilius https:

Try some stoic books maybe? There are ancient ones like [0]. I don't know any moderns ones. [0] https://en.wikisource.org/wiki/Moral_letters_to_Lucilius https://en.wikisource.org/wiki/Moral_letters_to_Lucilius