Management and being humble is what they should be taught. Well, I don't want to speak about it because I know it's hard to teach kids and hopefully I'll be able to apply that to my kid.
Everyone who has children definitely has a way to teach their children to be better from an early age so that their children can be smarter, more independent, and also have a polite attitude in facing every problem in their life later. So you and other people may apply different ways to it as long as the thing that is applied is most suitable and better for their child.
That's because I've seen great, humble and hard working parents but then, their kids are not. It's easy to tip on what must be done but when someone goes into the actuality, everything changes.
It is true that nothing is easy in life, especially when it comes to educating our own children, because they don't necessarily want to work as hard as we have done throughout our lives. But that doesn't mean every parent can't direct them to be better because no matter what their attitude is, they will definitely listen to what we say at a very early age.