The only "cure" for addiction I have ever found to work is to not put a substance that I have been addicted to in the past (or I suppose any known addictive substance) in my body. It really seems to work with time. Maybe it's not a cure per se, but maybe there really is no cure for addiction, just a process with a beginning and an end: Use of substance, addiction to substance, discontinue use of substance, withdrawal from substance, no longer addicted to substance, permanent abstinence from substance.