I know I am doing wrong but why can't I stop

I have been right where u are with  a LOT of DH's family. I had to learn to put my foot down and let them know I love them all ,but they had to respect my wishes in my home.Was it hard ? yes . But it sure felt good when it was all said and done.

the bonus is , once word got out I was not takin their crap they stopped making my home their motel.. NO more in-laws for me...!!!!

Be selfi**** is your house - your rules.
If they have to have it - tell them - in  a respect for you - that they have it in a place that you designate for them to have it.

As for your DH - he is selfi**** is his father, his family that YOU are putting up with - they can and should accommodate some of your wishes out of courtesy in not in anything else. 

 
   I agree with everyone else here I would put my foot somewhere and let them know what the rules are in YOUR HOUSE.

  I am also a recovering food addict and since I'm the only cook in the house I cook healthy meals they eat whatever I make or they can make their own.
  
When I started loosing weight for my WLS  I started to keep large bowls of fresh fruit shopped up in the fridge like watermelon, cantaloupe and pineapple I also keep  cucumbers in Chile and lime juice and carrots of course they were for me but the kids thought it was snacks for them and they started eating it up so I just keep filling the large bowls as soon as they are empty.
  
Good Luck