There are shelves full of books about children's behavior. The book stores, schools, and psychiatrist offices are choked with them. Each of these books attempts to tell the reader what is going on with the child when some sort of behavior is observed. This is all well and good. But, it is passing strange that very few times has someone approached the subject from the opposite side - showing the child how his brain works, how his thinking processes work, and why they work like they work. Danna G. Hallmark has developed such a book. Maybe, for the first time there is a way to reach a child in his language, at his pace - from the inside out. Danna's book How Do I Feel Happy? How Do I Feel Sad? does just that.