You have to have at least 1,000 calories a day. But one thing is to not eat after 8. Along with pack food or small health snacks. Chew gum throughout the day also helps fight the urge to eat. Drinking a lot of water helps the body along with makes you feel full
You have to be eating properly to stop eating. What on earth are poonskies and wendy`s ? this diet doesn`t sound very good. Go and see a dietician for advice on diet.
Start writing down every thing you eat during the day and add the calorie amounts to a spread sheet. You'll be surprised how many calories you stuff away.