Unfortunately, by the time many decide to begin training it has become clear to everyone that has had contact with the child that he or she is a spoiled brat. The parents are often the last to make this discovery, but even they must eventually admit the truth that is spoken of in the scriptures. Proverbs 20:11 says, "Even a child is known by his doings, whether his work be pure, and whether it be right."
Don't wait too long!