Well, the rooms of AA and this forum are proof that it is absolutely possible. I remember a time when I didn’t know if it was possible. I could not imagine a life without alcohol any more than you can now. I remember the leap of faith I had to take to try it anyway. I was pretty desperate. Life couldn’t go on like this. Seems to me you’re close to this point too, with your unsucccessful attempts at moderation…
It doesn’t take 45 or 55 days to break the “bad habit” of being an alcoholic, it takes recovery work and lots of it.
I’ll attach some links that I find helpful.
Advice for the Newcomer and Constant Relapser
You’ve come to the right place and for the right reason. Wish you all the best!