I am worried about my children. are there good ways to raise them so they will avoid addiction?

Yes: Love them unconditionally. Be honest with them, encourage them to share with you. Play with them. Have boundries with them. Encourage extracirricular actives such as sports, music, the arts. Let them know certain things you will not tolerate in your house such as underage drinking or drug use. Take a good look at your own "habits". Know their friends, dont be afraid to be nosey. And pray like heck.

Yes: Practice and model three principles in your life: h.O.W, honesty, through questioning and observing circumstances that arise. Open-mindedness, asking for help and listening to others ideas and emotions. Willingness to take actions necessary to instill these principles, admitting mistakes and making amends; forgiving yet not forgetting.