EP. 159: THE THREE DIMENSIONS OF A FULFILLING LIFE

WITH SHIGEHIRO OISHI, PHD

A world expert in social ecology and well-being explains why novel experiences that bring both positive and negative emotions are a key ingredient in a fulfilling life.

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We often confuse happiness with the absence of sadness, or a meaningful life with a productive one. The result might be a life that runs smoothly, but feels strangely flat — as if something essential is missing from the story. What if a truly good life isn’t just happy and meaningful, but also interesting?

Our guest today is Shige Oishi, PhD, professor of psychology at the University of Chicago and author of Life in Three Dimensions (2025). Oishi pioneered the idea of psychological richness — the notion that a good life requires a diverse set of interesting, even disorienting experiences. As an expert in social ecology and well-being, his work spans more than 200 scientific articles and has been featured in outlets such as The New York Times, The Washington Post, and The Wall Street Journal.

Over the course of our conversation, professor Oishi traces his own journey from an undergraduate in booming-economy Tokyo — surrounded by overworked, unhappy adults — to a career in psychology in the United States, where seeing professors live differently opened his eyes to alternative ways of being. We explore how cultures like Japan, the United States, Finland, and Denmark differ in what they chase and expect from life; why small, everyday joys and high-quality relationships matter more than grand achievements; and how “success” and “ambition” can quietly shape our sense of happiness.

We then dive into psychological richness as a third dimension of the good life alongside happiness and meaning — one defined by variety, newness, and memorable stories, often colored by both positive and negative emotions. We discuss the risks of chasing only stability and efficiency; the importance of spontaneity; and the surprisingly simple ways we can cultivate psychological richness by staying curious and saying “yes” more often.

 

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LINKS

Learn more about Dr. Oishi’s book Life in Three Dimensions.

Discover the work of Dr. Oishi’s lab here.

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EP. 160: DON’T JUST DO SOMETHING, STAND THERE

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EP. 158: A HUMANIST APPROACH TO CHAPLAINCY