Wolfgang Schwanke writes:

There's no choice, addicts are not in control. There was a point in
time when they lost control, but that was in the past and they didn't
know it then. A person who can at will stop using the drug is not an
addict by definition.

The first step in overcoming addiction is reasserting control. Addicts who
claim that they have no control over their addictions remain addicts for life
(often a short life).