This is perhaps the most fundamental Stoic principle: some things are within our control, and some things are not. Our task is to clearly distinguish between the two and focus our energy accordingly.
Within your control: Your thoughts, judgments, desires, aversions, and actions.
Outside your control: Other people’s opinions, external events, outcomes, the past, and the future.
“Some things are in our control and others not. Things in our control are opinion, pursuit, desire, aversion, and, in a word, whatever are our own actions. Things not in our control are body, property, reputation, command, and, in one word, whatever are not our own actions.”
We often say “I don’t have enough time.” But everyone has the same 24 hours. The difference is focus — how we direct our limited attention.
When we spend mental energy worrying about things outside our control, we’re literally taking time and attention away from things we can actually influence. It’s not a time problem; it’s an allocation problem.
When facing any situation, ask yourself:
This isn’t passive resignation — it’s strategic energy management. You fight where you can win and conserve resources elsewhere.
How much of your mental energy this week went to things outside your control? What could you have accomplished if you’d redirected that energy to things within your power?