Meditations, originally written by Marcus Aurelius, but translated many times over. More as an introduction to stoicism; choosing the translation that works best for you is ideal. Hays and Hicks translations are most often recommended but if you can peek inside the book to see what language resonates the best with you. Stoicism helped me build the ability to care about the things in my power to change, and not stress…
"Your soul takes on the color of your thoughts." P59
"Awaken; return to yourself. Now, no longer asleep, knowing they were only dreams, clear-headed again, treat everything around as a dream." P76
"It's normal to feel pain in your hands and feet, if your using your feet as feet and your hands as hands. And for a human being to feel stress is normal - if he's living a normal human life. And if it's normal, how can it be bad?" P76
"You can hold your breath until you turn blue, but they'll still go on doing it." P102
"Leave other people's mistakes where they lie." P122