The world’s greatest bodybuilder. The world’s highest-paid movie star. The leader of the world’s sixth-largest economy. That these are the same person sounds like the setup to a joke, but this is no joke. This is Arnold Schwarzenegger. And this did not happen by accident. Arnold’s stratospheric success happened as part of a process. As the result of clear vision, big thinking, hard work, direct communication, resilient problem-solving, open-minded curiosity, and a commitment to giving back. All of it guided by the one lesson Arnold’s father hammered into him above all: be useful.

Have you ever found yourself wondering “Why do I want more than I have?” Michael Easter, author of The Comfort Crisis and one of the world’s leading experts on behavior change, shows that the problem isn’t you. The problem is your scarcity mindset, left over from our ancient ancestors. They had to constantly seek and consume to survive because vital survival tools like food, material goods, information, and power were scarce and hard to find. But with our modern ability to easily fulfill our ancient desire for more, our hardwired “scarcity brain” is now backfiring.

No one wants to overeat. And certainly no one wants to overeat for years, become overweight, and end up with a high risk of diabetes or heart disease--yet two thirds of Americans do precisely that. Even though we know better, we often eat too much. Why does our behavior betray our own intentions to be lean and healthy? The problem, argues obesity and neuroscience researcher Stephan J. Guyenet, is not necessarily a lack of willpower or an incorrect understanding of what to eat.

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From social disruptions like economic recessions, pandemics, and new technologies to individual disruptions like getting married or divorced, illness and injury, career transitions, and becoming a parent, we undergo change and transformation—both good and bad—regularly. Change is not the exception. It’s the rule. Yet we endlessly fight it, often viewing it as a threat to our stability and sense of self.