The Art of Living by Epictetus
This Stoic philosophical work offers guidance on achieving inner peace and wisdom through self-discipline, virtue, and acceptance of life's challenges. Epictetus emphasizes personal responsibility, rational thinking, and focusing on what one can control for a fulfilling, meaningful life.

Epictetus (c. 50-135 CE) was a Greek Stoic philosopher, born a slave and later freed. His teachings, recorded by his student Arrian in Discourses and The Enchiridion, emphasize self-discipline, rational thinking, and inner freedom through virtue, profoundly shaping Stoic philosophy.