Although my 3-year-old son is not as willful as the prototype described in the book, he is demanding and "I want" seems to be his favorite word. I liked 2 other books in this series and enjoyed/learned from them (EPG to Raising Boys, EPG to Positive Discipline), so I purchased this one hoping it could give me some ideas about how to work with the demands.
I have to say that the best thing this book does is to help the parent to realize that willfullness is not a bad thing in itself. As the book says, a willfull child is a strongly self-determined child, and that is not a bad personality trait. This helps put a positive spin on Nathan's "Evenings of Demands!" : ) ... and helps me to view them in a more positive light.
But, the book doesn't just say, "let them be willfull," and leave you hanging. More-or-less, it shows you ways to channel willfullness into positive directions and how to prevent the willfullness from dominating family life.
The prototypical willful child described in the book sounds like a real p-i-a.