Many people go on a diet, yet we know that dieting doesn't work well in the long term. We may posit that these people do want to lose weight sustainably. Then why do they, again and again, go on a path that doesn't lead them there? Because they think it does lead them there. There is a mismatch between hope/belief and reality. In such a case, one frequently sees people looking for a solution somewhere, anywhere outside of themselves: the...