There is some really good advice here....I hope that you can put it to good use. Here is what did not work for me.......
#1. My Wife. Yep, She insisted that I quit. Nagged and nagged and nagged. Increased my smoking by about double. Made me feel guilty all the time.
#2. Alcohol. I couldn't have a beer without a cigarette. It just wasn't possible. I was able to go weeks at a time without smoking but one or two beers and I was off to buy some smokes.
#3. Friends. Since I have quit drinking and smoking I have changed social circles completly. Many people pushed me to drink or smoke. There were times that I would cave in and other times that I wouldn't, but the one thing that was consistant is the "outing" that I got from friends that drank/smoked. I still get it from family sometimes, so I usually just exclude myself. I have to admit that they are cracking and don't push me that hard anymore.
Here are some things that worked for me:
#1. My wife. She finally realized that I had to be ready to quit. She supported me completely and didn't nag me hardly at all. She let me make the decision on my own as I became ready. Let me do it on my terms.
#2. Zyban. A friend of mine had a prescription for it and decided not to use it so I bought it from him for $100 bucks. It says in the directions to keep smoking while you take it. I only smoked outside as we had a baby. I found myself going outside less and less. eventually I just didn't smoke at all, and didn't even realize it. The problem for me was that it magnified my emotions by about 50%, If i drank at all then it doubled that to 100%. If I was in a good mood I was giddy, but if I was angry then I was extremely angry. After a couple of raging anger spells I learned to control it, and to avoid things that would make me lose it. Fortunately I didn't do anything bad. Consult a Doctor before doing this don't do it the way I did. Be sure to tell him/her about any and all medications your on including anything over the counter, even vitamins and "all natural" stuff.
#3. Toothpicks. Toothpicks are cheap and readily available. Chew on them and flip them in your fingers. Break them, tear them up, stick them in an olive, whatever it takes to occupy your hands. This is especially important when on the computer or in front of the T.V.
#4 Push-ups. Whenever you have a bad craving take a few really deep breaths. Then while you reflect on all the things you just suddenly remembered from you childhood, do some push-ups or some other physical activity. Try to do this instead of turning to food. Eating just made me want to smoke more, and smoking more just made me want to eat. I got up to about 280#. Hey Hey......lets keep in mind that I am 6'4". I am now down to about 240 but that is another long post.
I hope that this helps and I am sorry for writing so much. Redfrog hit it hard when he said to quit one at a time.
Also you might not have to change social circles like I did, but when I quit drinking/smoking there was no reason to go to the bar anymore, and I don't really have people come over and drink around my kids, so with some people there just isn't anything left.
I cant help but be angry at my father and my sister for taking up smoking after watching my mother die a long slow death from lung cancer at 49. I would post a picture of her here, but we have all seen it before and I don't want to stir anyones emotions. If I thought it would help even one person though I'd do it.