All our life we learn things that will be taught to our kids. If they listen that knowledge will save them from hard learned mistakes that we learned the hard way. 
It has been my experience that the young go out of their way to ignore the wisdom of their parents. Why is it that the youth want to learn the hard way or they just don’t believe their parents. I think wisdom is hard to teach, it must be learned from personal experience and the youth will need to make their own mistakes. Dana Sibilsky learned from the school of hard knocks.