Шон Янг, professor of medical school of the Californian university and doctor of psychological sciences, tells how to correct behavior - it and other people, doing an accent on stability of changes. He describes seven forces, that will help you forever to get rid from pernicious habits and replace their new, useful, - and not for a time, and for life.For all, who wants to change existent habits, purchase new and to do them the second nature.In Russian language published first.