How did you manage to quit smoking?

I want to quit smoking. I’ve tried several times before but the longest I’ve ever lasted was 1 week. My husband has agreed to quit with me but the last time we tried that we nearly killed each other. I know there is no easy way but some tips would be appreciated. How did you manage to quit? I know the nicotine is out of your system in just a few days but does the desire to smoke ever go away?