Proverbs 19:18 "Chasten thy son while there is hope, and let not thy soul spare for his crying." There will be a time when there is no longer hope. Our children will be set in there ways. Like a tree when it is all grown up is no longer flexible. I recommend this video to all. Even those without children. It is good to learn the ways of the Lord even when they do not directly apply to us.
Matthew 11:29 "Take my yoke upon you, and learn of me; for I am meek and lowly in heart: and ye shall find rest unto your souls."