I've heard it said that people should not choose to stop smoking at the same time they are dieting or some other difficult task. I hope you can do this, but if you see that you are too stressed out due to not smoking.....it won't be "that" good for the kids. You may have to tackle that job at a later date. Don't be too hard on yourself. You need something "fun" to do and not see how many battles to deal with while you are going through this trial with your M.
It is not about what you feel should work in your M. It is about doing the work that gets the right results. Do what works!