Yours, Not Yours is a Stoic practice ground for learning to distinguish what lies within your control from what does not. Rather than offering a course to complete, the site encourages an ongoing way of thinking: care for your choices and responses, and meet external outcomes with greater composure. Its exercises help users practise this central Stoic idea through four formats: true-or-false propositions, everyday situations to sort, exercises that break a situation into six parts, and historical cases with the analysis revealed after reflection.

Topics range from work and relationships to loss, fear, compassion, the body, money, and time. Each exercise includes an answer and explanation, with quotations where relevant, and users can filter by topic or try a random question with the Wheel of Fortuna. The site also presents Stoic thinkers and stories, including Diogenes, Regulus, Seneca, and Stilpo, alongside explanations of the philosophy, its sources, values, and criticism.

Progress features track mastered items and award medallions, making this a practical resource for sharpening Stoic judgment over time