You've got another former smoker here. I quit 3 years ago this coming January. Quitting is a very difficult thing to do, but it can be done. You just have to reach that point in your life where you truly don't want to smoke anymore. For me, the first 3 weeks were the worst. I tried to stay away from anyone who was smoking as much as I could. (Which really bit into the social life.) It was easier to be around it again after that.
For those of you who think you can't quit.... yes, you can. It's just a matter of finding that stopping spot. I tried to quit 5 different times before I got to the point where I said, "Hey, this is it. This is the last of it." I've never felt better. I've gained a few extra pounds (not a bad thing in my case), but I've never felt better.