I've been a 3+ pack a day smoker for 35+ years. Haven't had a smoke for 45 hours.
It helped me to indentify the triggers, mine was in the morning, coffee and a cig. Having smokes and beer at the local tavern, social gatherings with my chain smoking buds, and having the day’s last cigarette. I had to come up with ways around these triggers. You have the strength within yourself to do so, small strides more often yield big rewards, you will prevail……