Train up a child in the way he should go,
and when he is old he will not turn from it.
Whatever YOU as parents, or teachers, or mentors, have shown our children, over and over again, will be their guide: their beacon leading them down the winding way of life decisions. If you have trained them up according to God's Word, when they grow up, they will not turn from it. These children are on loan from God ... and at the end of this life; you will have to answer to Him on how you raised His kids.
Thankfully, He has provided us with a How-to-Guide: an instruction manual with the best life-guiding principles around. Have you opened your Bible lately and read what God has to say about rearing His children?