If it's a food you feel you only get around the holidays, you tend to overeat, feel sick and then doubt your willpower and feel you let yourself down. You go from justifying a few bites because it is the holidays, to then shaming, guilting and even hating yourself after.
Then, after feeling like a failure, you feel you have to punish yourself by depriving further to make up for it.
Is it really worth it to stay in this cycle of deprivation, shame and self-abuse?