I quit cold tirkey after a pack+ a day. I was planning on qutting for a month or so and one night I drank way too much and had a horrible hangover and didn't feel like smoking the next day. So I just decided to stop, the cravings were rough for a couple of weeks but went away, I just smoked more weed. Before actually quitting I tried many times before that, but I got stressed and started again. Just try to limit stressful situations and situations where you would normally smoke like bars for a couple of weeks. I haven't had a cig for over a year and a half now. Good luck buddy!