You will need:
A red candle
A black candle
An empty pack of cigarettes (or whatever bad habit you're trying to overcome)
Prepare your working space however you normally do. If you're going to cast a circle, go ahead. Likewise, if you call upon deities, now would probably be the time to do so. I did this on the first night after the lunar eclipse, but any time during the waning moon would work.
Light the red candle. Say, "Red is the color of strength, red is the color of power. I have the strength to kick this habit, day by day, hour by hour."
Light the black candle. Say, "Black is the color that sends things away, and gives me the strength to kick this today."
Working between the two candles, mix the cinnamon, ginger and chili powder together, grinding them until they are powdery. Place the charcoal disc in your bowl, and sprinkle the cinnamon mixture on top of it. Light the charcoal.
You should have a nice burning pile of ground herbs now. Slowly tear the cigarette package (without the cellophane) into small pieces. As you tear the paper, close your eyes and visualize the nicotine and tar leaving your body. Picture your lungs changing from black and icky to pink and healthy.
Place the torn pieces in the bowl with the burning charcoal. Light a match, and place it in there so that the torn cigarette pack begins to burn as well. It may not stay lit, but try to get it to burn a little bit. Say, "I burn what has no control over me. The addiction is gone, and I will be free."
Light the sage, and smudge the area around your work space. You are cleansing yourself of the effects of the bad habit, and freeing your body and soul from the addiction. Particularly smudge the area over the bowl with the burning cigarette pack in it. Say, "Within me is the strength, no doubt, and with sage I cleanse the air without."
Place your smudging sage in the bowl as well, and take a moment to reflect. This working is not about the habit itself, but about your rejection of the addiction. Realize that you will physically - and psychologically -- no longer need the habit.
Allow everything in the bowl to burn out on its own. If possible, allow the candles to burn out on their own as well.