Hi Salem,
You sound like the same kind of drinker as me. I never drank every day either and could go days, weeks in between. But when I drank I drank until I was rat-arsed. I'd get the urge, go buy the wine, tell myself I was just having a glass or two and end up sticking away a couple of bottles at least. One started, I could never stop until I literally couldn't drink anymore and would fall, pissed, into bed.
I'm twice as old as you, but started in my early twenties and it carried on for decades. I would hate for this to happen to you, or anyone for that matter. I've lost count of the times I've been embarrassed, ashamed, sick, ill, lost days and so on, the stupid, idiotic things I've said and done, the damage I've done to my body, the hours/days/weeks of my life I have lost nursing hangovers or sometimes unable to get out of bed. the money I've spent and just the whole sheer waste of it all. Originally it was socially, but as my social life dried up as I had kids, got into middle age, I would just sit at home (I'm a single mum) and get pissed on my own. I was doing that regularly up until a few months ago.
I finally stopped on 31st December last year and it is the best thing I have ever done. Life without booze is perfectly fine. So are holidays - I've been away and never touched a drop despite going out for dinner etc. I haven't done a Christmas without booze yet, but I'll cross that hurdle when I get to it. You can do all the same things ... but instead of having an alcoholic drink you have a soft drink. If anyone makes any remarks about it (although in my case, hardly anyone has) I just think 'it's none of your effing business what I drink' and smile and carry on sipping whatever it is I'm sipping.
I don't know how to advise you about 'how' to do it, but in my case I just decided to go a month without booze and see what happened. I never told myself I was giving up forever, and I still don't. I gave up for a month, got to the end of that month and just carried on and here I am six and a half months later.
I can honestly say now that booze - which was once such a huge part of my life, is something I hardly ever think about it. I have had only one real 'craving' - a Saturday evening standing at the Co-op checkout buying some bits and bobs for dinner, going back to an empty house and there was a rack of red wine (my favourite tipple) within arm's reach. I was so tempted just to reach out and pick up a bottle and literally had to will my arm to stay at my side. I got through it though .. and haven't had anything like that since.
I now live an alcohol free life which is something I would never, ever in a million years have thought was possible for me.
It is great that you have realised so early on that you have a problem. I hope you are able to do something about it sooner than I did.
Good luck
x