To stop smoking is a very simple procedure: you just do not lite the single next cigarette!
That is the only secret: not to lite this next one.
Watch out not to gain weight and be aware: it is a tough challenge, but many have achieved it, even I did it.
Reducing smoking is not bad for you but if you want to stop: make a clear cut. No excuse - just stop.
For the first 3 weeks get some Nicurette chewing gum. Helps to change your habits but can still provide some nicotin when life gets too taff.