hi luciana! i effectively quit smoking in 2012!
my take is to not have a drastic "breakup" with things you more or less enjoy. like with cutting down on eating (i am trying and somehow moderately losing weight) i try not be too hard on myself when i "slip" and eat beyond my intended intake. reduce smoking but if you happen to light up one, enjoy every drag you get out of it
i did cold turkey for three weeks which was tough but after that, the cigs i tried lighting up tasted awful and i've never touched a smoke since. i think it's really about your body telling you that enough is enough. have a great year!
joe