It’s not the same (obviously) but it depends.
If I buy a bag of jelly belly candy, I will eat the whole bag until I have a stomach ache, and then eat until the bag is empty. So I buy smaller amounts.
But other sugary snacks? I went cold turkey and cut out all sugar and it was all I could focus on, I craved sugar to the point of being miserable. I bought a bag of chocolates, told myself I could have one a day (like a mini snickers) - what happened will shock!
I ate one a day, and sometimes not even that. Just knowing it was there as an option took away the obsession and I ate overall a lot healthier.
So, yeah, I could do sugar in moderation with chocolate, but not with those tiny jelly beans.
Whatever your addiction is, only you know if you can really do moderation or not.
I know of other people that kept a pack of smokes or a pint of whiskey in the back of a cabinet. Knowing it’s there is enough, and they just keep putting off partaking until suddenly they realize it’s been a year or more and they haven’t thought about it in ages.
Why not nicotine gum? Or the patches?
(Asking as someone who grew up around smokers, dippers, and chawers - and now I’m incredibly grossed out by tobacco spit)