Nor7, if it is any consolation, each and every one of us was where you are now. And none of us are superhuman. You can get through this if you just follow the time tested rules of KTC: post your name/count/promise and then keep your word. One day at a time. Every day.
You are going to feel the withdrawal, but it's nothing you can't handle. You are going to feel craves, nothing you can't wade through (deep breaths!). You are going to want to rage at everything - bring that rage here. You are going to want to eat everything that isn't nailed down. Eat if you must - worry about the weight gain later. Right now you focus on your quit.
Water, hard candy, chocolate, exercise. Drink juices to keep your blood sugars even. And stay close to the boards and live chat on KTC for a while.
You can do this.
FLLIP