It's tough, and similar to other addictions (such as alcohol) I cannot have even ONE. I have proven this to myself.
For reference, my daughter is now 32. When she was 2, she walked into the head of my cigarette and got burned. I put them down in the next instant and didn't touch anything for over 9 years. At that point my younger (of 2) sons came along and I passed out cigars. A few left, I decided to kill 'em myself.
Hooked again, now as a cigar smoker because "its safer, I don't inhale." That went until 2011 and by that time had grown into a habit of 3 or 4 premium hand rolled cigars. Seeing as I wanted a new motorcycle I quit cold and bought the bike, swapping cigars for a bike payment. Paid off the balance in under 2 years.
So then one day in 2013 I landed a work related sale that was a good commission-boosting one, and there was a cigar store next door. One cigar on a Friday after a long hard work week, I deserved that. Within 3 months that went from 1 a week to one every other day, to finally 5-6 a day. I *always* had a stick around, hell...a whole box of 'em!
I quit again just after the 1st of this year. I do NOT do "New Years' Resolutions", so purposely waited a few days. Clean so far, but keenly aware that I cannot have even ONE. The scary thing is that I have in the back of my mind that if I outlive my wife, have a small well-ventilated room and no nanny wiping my ass, I will sit again sit back with a glass of Kentucky Bourbon or single malt scotch (either, neat please), and use cigars to join my wife. Sad. I'm trying to work that one out of my head. If I ever get grandkids, that could kill the thought forever.
I wish anyone quitting the very best success!