My mother was a genius. And her mom as well. They knew that children function better with consistent sleep. They knew that empty praise makes kids suspicious, while heartfelt, suitably rare praise fills them with pride. They made it clear that telling the truth was always much more important than the original misbehavior. They counseled patience and optimism with misbehaving but clearly bright young children: the kids would, and did, turn out just fine. They understood that self-discipline was a critical skill to impart to all children, misbehaving or otherwise.
So why do we need 300+ pages full of scholarly studies to tell us that?