Children need to understand the value they have to God and from God, the special creation that they are, in order to WANT to say no to substance abuse. They need to trust that God will get them through the tough times, if they are to reject the false courage of alcohol, the peer pressure of smoking, or the temporary escape of hallucinogenic drugs. They need to see purpose, significance, to their lives. They need to recognize a loving, heavenly Father whose values are for their good. You see, values are more than just statements of right and wrong.
Adults are no different.
Society can impose laws on us, but not inculcate values in us. Education about the evils of alcohol and drugs has never stopped an alcohol or addict. Only life comprehended in our God has value. Only life lived before God has values. It is when you have shown her the worth HER life has, first because God created her special and more importantly because Jesus gave his life to make hers right.