In the early 1970s, U.S. officials were alarmed to find that a large share of soldiers in Vietnam were using heroin, and roughly one in five showed signs of addiction. The expectation was a public-health disaster when they came home. The sociologist Lee Robins followed them. What she found upended the field: after returning, only a small fraction of the men who had been addicted in Vietnam became re-addicted at home.
The drug was the same. The men were the same. What changed was everything around them — the people, the places, the boredom, the stress, the easy access, the routines that had cued the habit dozens of times a day. Take away the cues and much of the compulsion loses its grip. It's one of the clearest demonstrations we have that behavior lives in context, not just inside a person.
This is good news, because it means you don't have to win every fight with willpower. You can arrange not to have the fight. Pour it out. Change the route home. Delete the number. Move the chair that faced the television where you drank every night. None of that is weakness. It's engineering. Willpower is what you use when the design fails. Design is what keeps you from needing it all day.
✦ Quote
"We shape our buildings; thereafter they shape us."
— Winston Churchill, speech to the House of Commons, October 1943
◎ Prompt
Walk through your home, your car, and your phone as if you were a stranger looking for cues. List three things that quietly invite the old behavior — and change one of them today.
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