Try swappimg smoking with exercising. I smoked for many years and when starting on the IVF route quit just cold turkey last Oct. i still think about smoking and miss it esp when havimg a drink, but it gets better every day. Have a glass of water when you are thinking of smoking. Just stopping is hard, swapping it fir something else (eg a healthy lifestyle-exercising, drinking water) is actually easier. Btw, i have cut back huge amounts on coffee and soft drinks since quitting- now i dont need sweetness to wash off the nicotine. Really liberating feeling! Good luck its really worth it.