Some cases family traditional background pursues children's destinies unknown to them, so no matter how they struggle nothing to show and before you realizes your age is gone and you end up becoming a parents to other children in poverty...training children early and give them responsibilities it will help them to task an ideas.
It's true that children of rich families usually stay rich and people of poorer families stay poor. One big factor is of course that rich parents will give a big inheritance of a lot of money and properties to their children, so even if the children don't have the most successful jobs they will still stay rich only from their families wealth. Poor families on the other side don't have houses and money they can give their children. A more important concept however I think is to be financially responsible and don't live above your means. It's usually behavior we learn from our parents and if we see that they save money and don't keep making unnecessary purchases, the children are very likely to do the same. I noticed from friends that are quite poor, that they buy a lot of new technology gadgets that they don't really need. It would make a lot of sense to wait 1 year and buy the things at a discount.