Quitting is easy..........I do it all the time........
The actual quitting part is odd, I dont have withdrawls or ect, I just get doing something in the shop and like have a ritual where I lay out my tools, finish my parts, then smoke and then get back to work. Or when finished, I just stop and smoke then put everything away and cleanup. Jobs like painting the house or other tasks. Theres always that pause in the project that has been for so long the time to smoke um if ya got um. At work or camping ect its really not much issue, but when in the shop it just fits so well thats the hardest part to break, the ritual.