Get the cigarettes away from you and do not "have just a puff and I'll start again tomorrow". Google the little list of positives that start to happen when you quit smoking or look here
Stop Smoking Benefits Timetable, consult it regularly for positive reinforcement 'cuz sometimes it is going to SUCK!! Since you have tried quitting before you know that there will be times when you can think of nothing else..it is literally an anxiety attack and it
is not real. It is certain that a situation will arise and you will try to justify having a cigarette because "this" situation is horrible and "I can quit again once I am through this". Bull**** and you must plan for the gibbering monkey of addiction to attack you this way. Forewarned is foreamed. When you have managed to make it a few weeks without cigarettes the monkey will try and convince you that you can have one now just to prove you have quit. Kick that little b*stard in his teeth and DO NOT DO IT!! Alcohol and social situations must be avoided for a minimum of a few months, your inhibitions will be reduced and you will feel unincluded and left out when everyone is out on the deck drinking and smoking one of those "little slivers of heaven" -these feelings are not reality they are the gibberings of that EFFING monkey again. Be prepared to put on weight as when you are eating you won't be craving a cigarette but when you overeat it will make you want one worse and then you will eat again to stave off that craving... ad nauseum. If you put on 20lbs so what, it can be lost and as you do not appear to have the food issues that I do losing the weight will not be tough for you.
When you are feeling the craving take a really deep breath, simulating the deep inhalation from the first drag when you used to light that gay up (couldn't resist). The craving will be manageable for the moment..it may come back in 2 minutes or 2 seconds just breathe again and go find something active to do. Begin exercising to battle the bulge and also establish new habits. I smoked 2 to 3 packs a day. I smoked while I cooked, I smoked while I bathed, I would've smoked while I smoked if I could've. When my wisdom teeth were removed I smoked through my nostril. You must begin establishing your habits all over again but without the association of smoking. I have been quit for three years now, maybe four, you can do it. It is like a bad break up when you are the one who has been left. Smoking will consume your thoughts then after 2 weeks you may realize "Hey, I haven't thought about a cigarette for 10 minutes!". That 10 minutes of peace will become an hour, then a half day, then a day, week, etc.
Though never for a minute think you have totally won. Be proud oft he ongoing accomplishment but that monkey is a part of you forever even if his voice is really small and easily ignored....until one day you don't ignore it and he is in charge again.
ETA: Oh and my dreams were messed up too, really vivid and I had to pee a lot during the night because I was less dehydrated I think (purely anecdotal). The above posters are right, you won't stink like a ciggy anymore and it is really nice, no more phlegmy popping sounds when you are napping in the lazy boy either and your head is at a funny angle.
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