For those of us who have never struggled with drug or other types of substance abuse, it’s almost impossible for us to understand how a person could become an addict. Many of us find ourselves thinking that the person should walk away from the destructive behavior and do as the anti-drug campaigns have said for years- “Just say no”. While saying no is definitely the best defense on ever becoming addicted to any substance; if you have a predisposition to addiction and have already said yes, it is no longer as simple as saying no.