In Okinawa, one of the world's Blue Zones where people routinely live past 100, there is a saying spoken before every meal: hara hachi bu. It means: eat until you are 80% full. Then stop.

What Does It Mean?

Hara hachi bu (腹八分) translates as "belly eight parts" — eat until your stomach is eight-tenths full. It is a Confucian teaching that has been practised in Okinawa for centuries and is credited as one of the contributing factors to the region's extraordinary longevity.

The Philosophy Behind It

The wisdom of hara hachi bu extends beyond food. It is a principle of restraint — of stopping before you are completely full, completely spent, completely exhausted. Applied to work, it means stopping before burnout — leaving 20% of your energy in reserve so that you can sustain your effort over the long term. Applied to giving, it means caring generously without depleting yourself entirely. Applied to speech, it means saying what needs to be said and then stopping — leaving 20% unsaid, letting silence carry what words cannot.

In the context of omotenashi and omoiyari, hara hachi bu is the self-care principle that makes sustained care for others possible. You cannot pour from an empty vessel, as the saying goes. Hara hachi bu refines this: do not wait until the vessel is empty. Stop pouring when it is 80% depleted. The remaining 20% is your margin of sustainability.

How to Practise It in Daily Life

Eat more slowly. It takes roughly 20 minutes for your brain to register fullness. If you eat quickly, you overshoot. Slow down, and 80% becomes easier to feel.

Apply 80% to your workday. Do not work until you collapse. Stop when you still have energy left. That remaining energy is what allows you to work well again tomorrow.

Apply 80% to giving. Care for others generously, but reserve 20% for yourself. This is not selfish. It is sustainable.

Going Deeper

Explore this concept further in the books of Takeshi Mori at takeshimori.com. Related reading: https://amzn.to/4m8e21d.

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