quitting smoking

any tips? I've gone from 40 cigs/day to 5, but I wanna quit for good
not smoking for long periods doesn't stress me out like it used to
the few cigs I smoke are purely out of habit (after waking up, after lunch, waiting for the train occasionally, after diner and before I go to sleep) and they make me feel like shit :\
I should really seize the opportunity to quit now because I fear I will soon start smoking 10 cigs/day, then 15, then 20 etc.
I just can't break the habit :(

>>11
1. Nicotine is far more addictive than dopamine.
2. Smoking often becomes a habit and therefore is habit forming. We all know how difficult it is to break habits.