We all know how easy it is for a life to go off track when we are left to our own devices, and that is why those of us with means do what we can to jig the way for our children. I worked for one of the test-prep companies for about six months, coaching students for the SAT and GRE tests. The intellectual content of what I was offering was pretty close to zero—a few tips that could be put on one side of an index card. But the classes and tutoring sessions provided an institutional setting that forced students to show up and do practice tests.