Tarbiyyah means to look after, to nurture, to nourish, to help grow and flourish. It implies the ability to inspire confidence. It implies the courage to allow and promote creativity and innovation. It implies the ability to trust and not to stifle, to be firm when needed and even to impose sanctions when necessary. The starting point for Tarbiyyah is the example of parents.
Small children take their parents as models.
If parents are lazy and careless, the children will also take laziness and carelessness as normal. If they tell lies, children will regard lying as normal and acceptable. The same applies to smoking, drinking, rude manners, swearing and all other bad habits. There is no way parents can motivate their children to practise the Islamic virtues if they themselves do not respect the values and try to practise them also. As children grow up, they will only perceive the inconsistency or even hypocrisy in their parents' approach.