i have a hard time with the halloween chocolate too
one thing that i do is, when i buy the candy for trick r treaters ahead of time, is have my teenager hide the whole bag somewhere in the garage and not get it back out until halloween evening...then i might eat some, but nothing like the whole entire bag, which i would if it was left within my reach LOL....one year he hid it ahead of time, and on halloween took off with friends, with no phone (he's not allowed a cell phone, another story) and i didnt know where he hid the darn thing! luckily he came home before the trick r treaters showed up and i had him go find it
when the kids bring home their halloween candy, i try to treat it like any of their other stuff...like i wouldnt get into it without permission....so i might ask my kids "can i have a few pieces?" but i wont help myself to whatever i want because i consider it "theirs"...if that makes sense
usually the kids stuff themselves silly on halloween LOL and after that i might send a few pieces in their lunches for a few days...but the rest either gets saved out of sight, or tossed, or taken to work for the coworkers...because my kids would stuff themselves on candy any given day of the week if i let them (so would i actually lol) and frankly none of us need THAT much junk
on the other hand....my logic goes that, if i'm eating well and watching calories and working out every other day of the year, even a little overboard on halloween itself isnt all that terrible...as long as it doesnt stretch into the day after, and the day after that, and on and on