Oftentimes people say this really comes down to "do you want to do this - do you want to be a healthier person?" if the answer is yes - then you just DO IT. And I completely agree.
BUT...
I think there's one more thing about this that trips up a lot of people, which is the unwillingness to accept that they can't have BOTH. That they can't SOMETIMES "pretend" or momentarily set aside the fundamental, bottom-line truth that they have non-negotiable problems with food (including certain lowcarb foods for some of us) that require a kind of abstinence they're not willing to believe or honor for themselves.
This is a personal truth that is as fundamental to the addicted among us as it is to the person who is allergic to peanuts--the person who eats peanuts and dies. Except that for us, sadly, the death is a slow-motion one that can take years of cyclical, self-inflicted pain and agony (both physical and emotional) to ourselves and to our loved ones who must care for us as we spiral down into the abyss.