The only thing I know is when they say everyone is different. It's true. I know a number of people who had trouble with alcohol. Me included. One friend physically and emotionally battles it almost everyday. She can quit but it ain't easy for her no matter what she does. Then I have a family member who just up and quit and that was the end of it. Over 40 years ago. I asked him if it was hard and he said oh at first but then it passed. Said it like he was talking about a cold.
I'm kind of like him. I think I'm just lucky. It was more a bad habit and me just not really caring all that much. Until it got to the point when I did care.
I don't have to work to hard on not drinking but I definitely need to work on being the best me. Much easier to do when I don't drink. Almost impossible if I do.
Just my opinion but I do think it is harder for some people. I have no idea why. Ain't fair but it just seems that way. I just hope everyone finds what works for them.