Re: not something to brag about!
Knitting helped me quit, though that may not be an option for a busy, stressed out mama. The only other advice I have is just stop. Don't allow yourself to have even just one. That's what I had to do. Do whatever it take to make sure you dont- think of your kids and what they'd do without you, your dad and his illness, whatever it takes to create an aversion/negative association to smoking.
I'm so sorry you are having a rough time, and I hope you are successful quitting. I know it is hard (believe me, I know), but it is so much better in the long run..
“We are not put on earth for ourselves, but are placed here for each other. If you are there always for others, then in time of need, someone will be there for you.”