I have smoked more than 20 a day for around 25 years. Anyway my poor Dad, an ex smoker just got referred for chemo, I packed smoking in the next day. That was on Friday, so just about at the end of my third day.
No matter how hard it is it will be nothing compared to what my dad is going through......the thought of that is what is keeping me going.
To all you also in the process of quitting - keep going - next time you have a craving, imagine the doctor is about to tell you that you have cancer.