I hope you don't mind me offering a word of advice, I would stop on 4th January. All over Christmas you will be doing things you associate with smoking, having a drink, eating rich foods etc... I stopped on 5th January when we went back to work. Was working nights so was able to come straight in and go to bed so a lot of the day taken care of. Didn't go out first weekend but then made a point the weekend after of going down the pub. When .I got through that I knew I could crack it. Found out I drunk quite a lot more, raising my glass up and down instead of being occupied in smoking a cigarette. Shows how actions become engrained in you.