I had my last drink on August 28, 2005. I've been active in AA since then.
Two things to keep in mind at the outset: there is a difference between a problem drinker and an alcoholic. A problem drinker can find ways to quite or manage the problem. Alcoholism is a medical condition, at least partially genetic in origin; we metabolize alcohol differently. This makes it pretty much impossible to quit without help. That help can take different forms, but will always require professional help.
What kind of drinker are you? Nobody but yourself can answer that question. However, if think you might have a problem, you should seriously examine that question. BTW, alcoholics come in many varieties, not all get drunk all the time.