Arthur C. Brooks explains why your 40s feel harder: fluid intelligence declines while crystallized intelligence, your ability to recognize patterns and find purpose, rises sharply. Clinging to ambition for money and power during this shift causes burnout. The answer is shifting toward a quieter, purpose-driven life.
The first quarter of life is called Brahmacharya. This is when you get kind of hooked into worldly goals, money, power, pleasure, honor, admiration, prestige, all the rewards of the world. This second phase is we get stuck there. And to break that cycle is to move into the third phase called Vanaprastha. Van is to retire and prastha is forest, backing up into the forest. And you're backing up out of the world of worldly idols. Into the forest of quiet and calm and coolness. People have a natural appetite for that. One of the signals for that in Western social science is the tendency for people to burn out on their jobs. The reason that people are burning out in their 40s is not just because they've worked too hard all these years and they're workaholics. It's because what used to be hard is now impossible. These cognitive puzzles, they tend to get harder. You tend to feel like you're getting rusty, even though you've never stopped working. Well, that's normal. It's the normal functioning of the prefrontal cortex of your brain and your fluid intelligence declining. The good news that most people don't understand is there's a second intelligence coming in behind it, and that's crystallized intelligence based on wisdom and pattern recognition and deeper concepts and goals in your life. That starts to come in much, much stronger in your late 30s, early 40s, through your 40s. But if you stay on the wheel of these worldly idols, you're going to be really, really frustrated.
