From my observation:
Alcoholics, problem drinkers, heavy drinkers, etc, who don't want to quit 100% for them self have 0% chance of staying sober, while every drinker who wants to quit 100% for them self has about 100% chance of eventually getting sober.
Some people I've seen who fall into the Don't want to quit for themselves are: Stopping only when they get caught; Stopping to get someone or something off their back; Want to just cut down; Want to still drink on special occasions; Still romanticize alcohol; Can't see themselves living without alcohol; Stopping for someone else; Don't want to change old habits.
Everyday you can choose to be one of the 100% who don't drink today or the 100% who do drink. It's all up to you.