Hello and welcome to the forums.
I started drinking when I was fourteen. I drank for another 35 years. All of them alcoholically. I didn't have an off button.
I didn't know how or where to get help to stop, either. Then, I found Alcoholics Anonymous and a little later this place.
It took me a few tries to quit but I've now been sober almost seven years. And I was a very heavy drinker.
You've already made a good start by coming here. So stick around and don't take that first drink. You'll finds lots of support here and post away!