Making people genuinely resilient in the face of temptation can’t be done by chanting “Just Say No,” or by inventing ever more creative lies to tell to schoolchildren. Lots of people are going to be addicted, when strongly habit-forming and highly pleasurable drugs are available to them, for the same reason lots of them are going to wind up obese when they’re offered all the sweet, fatty, and salty food they can stuff themselves with, plus unlimited sedentary amusements.