I'd think it would be the opposite, with supply & demand. I noticed less fish available in the supermarket on my last visit. Anyhow, I opted to give up booze and porn, knowing I'd fail at both. I mean, I don't "fail" outright. It's more a slow slide: "Remember, man, that thou art dust and unto dust you shall return."
I decide to give up porn. Then to limit myself to vanilla porn once a week. Pretty soon it's like "OK. No albino transexual midgets, taking a shit on a guy from a stepladder" porn.
Or I can have beer with a meal, if it is appropriate. But really, who has beer with a breakfast dish (I work nights and sometimes I feel like an egg and ham on toast (or a waffle) with hash browns when I get home)? A screwdriver is the right choice. Then it's 1 cocktail. Then it's "I won't *buy* any more booze until Easter.
The depressing side of things is, I did pretty much cut out booze for a week or so. It made me realize that I wasn't feeling terrible all the time because I was always hung over. I was feeling terrible all the time because I'm getting old.