My daughter is 3 years old. My wife and I are more strict on her and hold her to a higher standard than most 10 year olds. She is one of the most well behaved kids and get compliments all the time. Because we are so strict on her, we also give her more responsibility as well and she has become very independent. This is all because we spank her when needed, stern with our words and we don't back down. Yet we are fair to her as well. You don't go over board and abuse your role as being a parent. No I am able to say two words to her in a firm voice and she will knock off whatever she is doing nearly instantly. "At ease." It's an army thing but it works.