Going shopping every night could get very expensive! If circumstances allow, why not take up a hobby, get crafty, or take a class (aerobic, strength training, swimming, etc) Turn that munch time into your time to triumph!
Perhaps make a rule that you won't eat anywhere but at the table and that way you can't sit on the couch and mindlessly eat the whole bags of chips or cookies, or whatever.. As HOTTCOUTURE said, don't deprive yourself of snacks, but do make them count. Don't forget to track your food in the nutrition tracker.
I wish you sweet success on your journey.