wow, going cold turkey is hard.
some pple, which i recommend myself, go cold turkey for 2 weeks (no gym but walk everyday for 30 min), then every sunday treat yourself to one piece of food that you like. ex: italian ice cream or one dble cheese burger (no fries no soda) but the by the 3rd week you should already have a plan for the gym and be there the leat 3 times a week. or workout at home that many times. ALWAYS work out a sweat.
Good luck! im rootin for ya!