Someone posted the happiness curve on LinkedIn, and I got curious.
The classic finding: happiness is high when you are young, dips to a low point around 47 or 48, then climbs again. An economist named David Blanchflower found it in 132 countries. It even shows up in chimps and orangutans, so part of it is biology, not just mortgages and careers.
Interesting data. But it needed a double-click for me. Because Blanchflower looked again in 2025, and the curve has changed. The midlife dip has mostly flattened. Not because midlife got better. Because the young got worse. Distress is now highest among the young and falls with age.
Interesting. But I think there are a few suspects here.
One, the economy. A generation grew up in homes stressed by the Great Recession, and their own start in work and housing has been harder. Two, COVID. It poured fuel on it, but the fire started years earlier. Three, some of the rise is measurement. We taught young people the language of distress, and some normal hard feelings now get counted as disorders. And four, the phones. But I do not think the blame sits in one place.
Here is my main suspect. Youth is not as centered anymore. And there is a biological reason the flood hits them hardest. The brain is not finished until about age 25. The prefrontal cortex, the part that weighs consequences and filters impulses, is one of the last parts to mature. That is a generalization. Some people are not ready until later. But the broad point holds. The filter is still under construction at exactly the age the flood arrives.
Because the landscape changed too fast, and we have not learned how to process it. Information used to be centralized, channelized. It came through a few gates, and parents were the central gate. What a child got exposed to was mostly in someone’s control. Now information is distributed. It comes inbound from too many pathways: phones, laptops, games, the internet, digital music, social apps. The old gate cannot hold, and we have not evolved new gates to replace it.
Even friendship has changed shape. Friends used to be people you knew, who shared your day-to-day activities. Now some young people have friends they have never met and will never meet. For a developed brain, that is a choice. For an undeveloped one, it is dangerous. It cannot yet weigh that influence.
On the toolmakers, a balance has to be struck. They are not blameless. A car was not designed to keep you driving forever. These products are designed to harvest your attention, and that design is aimed at brains whose filters are not finished. That is a real fault. And still, when cars replaced horse carriages, accidents rose because of the speed cars made possible. We did not ban cars, and we did not only blame Ford. Because with cars, we did eventually build gates: licenses, age limits, rules of the road. We have not built the equivalent for information yet. The mistakes here are in many places. The toolmakers built harvesting machines. The rest of us handed them to children with no gates at all.
Information availability is good. But only if you have a way to pre-filter it, to manage it, so your attention stays centered. Without a filter, availability is not a gift. It is a flood.
The curve did not move because middle age changed. It moved because the starting point dropped. And the starting point dropped, I believe, because attention lost its guard, and we have not built the new one yet.
Until we do, the gate has to be your own. I ration my time on these tools. I am not much on LinkedIn or X. The others I use all the time, but I treat them as what they are: information sources. Sources get managed. They do not get open access.
Because time is the most limited resource you have. It is the only thing we cannot grow. Money can grow. Skills can grow. Time only shrinks. Protect your time and attention. That is your gold.
References
Blanchflower, D. G. (2020). Unhappiness and age. NBER Working Paper 26641.
Weiss, A., et al. (2012). Evidence for a midlife crisis in great apes consistent with the U-shape hypothesis. PNAS, 109(51).
Blanchflower, D. G., Bryson, A., & Xu, X. (2025). The declining mental health of the young and the global disappearance of the unhappiness hump. PLOS ONE.
Foulkes, L., & Andrews, J. L. (2023). Are mental health awareness efforts contributing to the rise in reported mental health problems? New Ideas in Psychology, 69.
Casey, B. J., Jones, R. M., & Hare, T. A. (2008). The adolescent brain. Annals of the New York Academy of Sciences, 1124(1).