" Harshness, gruffness, and sternness are not effective in shaping a child’s will. Likewise, constant whacking and threatening and criticizing are destructive and counterproductive. A parent who is mean and angry most of the time is creating resentment that will be stored and come roaring into the relationship during adolescence or beyond. Therefore, every opportunity should be taken to keep the tenor of the home pleasant, fun, and accepting. At the same time, however, parents should display confident firmness in their demeanor. You, Mom and Dad, are the boss. You are in charge. If you believe it, the tougher child will accept it also. "
― James C. Dobson , The New Strong-Willed Child