I'm a firm believer in getting help for alcoholism. I am an AA member and I went to counselling for a couple of years (he declared me sane and didn't want to see me anymore. lol).
Lasting sobriety requires a change in the way you think. It's about seeing through the BS and accepting reality. 1) I am an alcoholic and cannot drink - period. 2) My life was hell when I was drinking and I will return to that hell if I drink again.
In counselling, I was told that the one year mark is significant in terms of being able to get through the usual annual drinking events sober. I also read somewhere that it takes the brain a year to re-wire itself.
I don't really look at it as demons but rather as those old delusions creeping back in my head. Happens very rarely now and I recognize them for what they are.
Congrats on the sober time! It gets better.