I smoke two packs of cigarettes a day and I want to quit. How can I do that without going to detoxification?

I've been smoking for two years. I have a light form of asthma and I want to quit smoking because I feel worse and worse, but I just can't shake off the addiction. I really need help here.

I was a heavy smoker too..I got a tablet called Zyban off my doctor..you start the tablets but can still smoke for a week I found before the week was up the addiction was weakening the cigs were tasteless and I didn't seem to get a HIT off them…it took me 3 weeks to stop totally it was pretty painless the hardest part was the habit you know what I mean after a meal a coffee and a smoke..that was 3 years ago…If you really want to do it you will succeed good luck I hope you are a non smoker by Xmas.