Challenges for the next decade as the subtitle ofa book is a statement ofambition. In the present time we have to be ambitious as scientists, clinicians, and teachers. Without ambition we would not be able to confront the problems of young people in an effective way. In this decade, we can see an abundance of problems of young people football hooliganism, school drop out, vandalism, delinquency, lack ofsocial skills, aggression, and depression. The problem seems to grow. Governments, parents, and concerned citizens call for action now. Unfortunately, the action that is taken is often impulsive and not based on scientifically proven methods longerjail sentences for young first offenders, putting young offenders in military look-alike training camps, etc. For some reason, the usage of effective interventions is limited. In this, book the reader will find an extensive overview of what we know to be effective as a cure or prevention for the above-mentioned problems. The first four chapters