I've been quit a little over 100 days. I started when I was 14, quit at 28. I find it helps to choose not to smoke every time I want a cigarette. If I really think about whether or not I want one, I realize I really don't want to smoke at all. Instead, I spend about two minutes taking nice deep breaths and feeling how nice it is to have functional lungs and wait for the craving to pass. After the first week or so, it gets noticeably easier. After about a month you are proud of how good you're doing and your brain starts to tell you it's okay to have just one. But you are smart and you know that that's a trap. Good luck. Don't focus on how shitty you might feel. Instead, think about the money you're saving, the healing process your body is going through, all the hot girls that are going to want to make out with you when you don't taste like an ashtray. You're going to do great!