What finally worked to help me give up smoking was medication.
I saw my doctor, they prescribed me a medication and that was the only thing that worked for me.
My husband was also a smoker.
We both gave up smoking and neither of us have smoked again since.
By giving up smoking we have saved so much money to the point that we now go on annual holiday or at least once every two years on an overseas trip and that is our reward to each other for giving up smoking.