R’ Chaim Volozhin was asked by the Russian Minister of Education, at what age do you start to be mechanech your children? He answered, 20 years before they’re born.
This is a famous story, and it’s lesson is beautiful. If you want your children to be a certain way, YOU HAVE TO BE THEIR EXAMPLE. if you want your kid to be a Godol HaDor, you have to be a living example of what a Gadol HaDor should act like. Your training is their training in both middos and what will create their second nature. A parent molds and shapes his child through HIS character and personality. Unbeknownst to you, he picks up on every little thing we do and say, how we act and react.