The proper quote -
"Addiction does not lend itself to controlled use of the substance.
If a person tries to treat an addiction as a bad habit, they will lose to the addiction. If, on the other hand, they treat an addiction as an addiction, they stand a good chance of beating it.
Once a person is addicted to a substance, they must totally avoid any use of that substance or else relapse into a full- fledged drug dependency. This holds true for alcohol, heroin, nicotine, and a host of other drugs."