Anxiety, depression, alcohol and other drug use… many of us assume that problems like these affect children who experience the pressures of poverty. It seems obvious that kids who deal with urban violence, homelessness or hunger might struggle. We might assume that children who live in affluent communities, but whose families face financial insecurity, could also suffer emotionally. But what about teens whose families are comfortable or even well off? Surely they must be healthier than average. They are so…