Good for you mate, hang in there and don't give in to temptation, if you can hold out for around 2 - 3 weeks the worst will be over and before you know it you'll no longer crave it. Eventually you'll become one of us reformed smokers (12 + years now) who can't stand the stench of cigarette smoke anymore and you'll feel 100 % better as well, and according to my friends and family, smell a lot better too