Pray for your kids and monitor the stuff they watch especially in formative years. Alot of cartoons nowadays are too violent and others too sexual. Indoctrinate your kids with godly values early. Sunday school. Family fellowship at home. A family that prays together stays together. Avoid favoritism and villifying wayward kids. Remember jeolousy made Cain to kill Abel. Engage 3rd party in counseling if you are unable to deal with the child but do not abandon the wayward child bcz that is where they will go to seek belonging and acceptance in the worst company especially family enemies. Above all pray over your kids daily. Offer sacrifice at prayer mountain every year at the start like Job did. This world is rotten pray every morning for your kids and your prayer and sacrifice will keep them from all evil.