Quitting smoking is easy..I've done it many time's.
The hard bit is to stay smoke free.
In the end I went to the "quit smoking nurse" at my local G.P's.
I was put on "Champex" tablet's, they suppress your craving's in your head (something like that..)
You carry on smoking as the tablet's slowly get to work,then one day you realize that you haven't smoked all day.
You MUST finish the whole course.
They give you some strange dreams as a side affect but the end result is worth it.
Remember that if you find it to hard, get down to the quit smoking nurse, she is there to help, with a wide range of method's & lot's of encouragement.
Good luck with your quitting.