Nope I don't chew with my mouth open. My boyfriend does though, it drives me nuts lol.
Like Larss says, it's mostly in your mind. Some of it is physical, but most certainly not your lungs, other than the harm smoking does to them. The withdrawal that you get is mostly with your mood, having mood swings, being grumpy, not knowing what to do with yourself without smoking, etc. Smoking is a habit, much like biting your nails, grinding your teeth, or drinking coffee, just on a more addictive level. Of course coffee can be addicting, though for me it's also out of habit. I've developed all these times that I'm used to smoking, like after eating, before and after watching a movie and even once during the movie if I can, after completing a task, after taking a shower, while sitting at the computer, before bed, after I wake up, when I make a phone call, when I'm bored, etc.
Gradually cutting down isn't going to work with me, I already tried it. Last year I was a pack a day smoker and decided that I wanted to quit on New Year's Day, so New Year's Eve would be my last day. I started cutting down in August from 20 cigarettes a day, slowly making my way down to like 6 a day. It was pretty easy, I came up with this idea to only smoke half a cigarette instead of a full one, so I still stepped out for a smoke almost as often while still cutting down on the amount I smoked. But after I cut down that much, I had a really hard time cutting down even further and ended up going right back to a pack a day.
No one method works for everyone. Some people can handle cold turkey, some can't. Some can cut down, some can't. Some can rely on patches or other nicotine alternatives, some can't. I've also tried electronic cigs, but they didn't work out too well either, because although they have nicotine in them and it's still the act of smoking, it wasn't the same taste and since they don't burn and stay the same length, I have a hard time grasping how long I want to smoke it, feeling like I want to keep smoking it, thus getting a craving for a real cigarette.
If I can dig around and find this darn book, I'll definitely try to sit down and read it before going into surgery.