And you have to start them young. With how the world is these days, sometimes good parenting wouldn't be enough. I think main priority is to teach them to be able to resist peer pressure later on when they hit their teens. That's usually want fuck up many people's lives.
At first I also thought same but later realized that when you train your children properly from their infant stage, they won't feel comfortable being in the midst of peer who have different home training from them. Peers actually influence the behavior of our children but good parenting will not allow them to mingle with such peer that will influence them in a negative way.