Good luck! It's something I did years ago, and it wasn't easy, but I've never regretted it. I'd just started practising regular meditation at the time, in a group setting, and that certainly helped me quit. I think I was using cigarettes to repress anger, and a lot of anger came up after I gave up. The meditation helped a lot. I also changed my routine so that I wasn't doing the things that I used to associate with lighting up, and I tried not to think about cigarettes.