Puddinpop, what other planets are involved in the T-square?
Pluto conjunct Mars is a bit different from the moon, as these are 2 masculine, malefics joining up. Pluto is so obsessive, I think the only way to beat this addiction is to replace it with another. Mars rules exercise and physical activity so that could be one of the best things to help. Take up aerobics, or whatever you're into.. try kickboxing if you have to, bc it seems you have a lot of excess energy that needs to be released. Maybe there are some unresolved anger issues? Pluto transiting Mars can create some intense anger, and in your 6th, it's almost on a daily basis. I can empathize.
Best advice, kick and punch it out! That should burn off the excess negative energy. Also, take 3 deep breaths whenever you get angry. You may even be addicted to the habit of putting the cig to your mouth, and it's just a nervous habit. Try chewing on something else, toothpick, straw, etc. It's all about re-programming your automatic response to stress, that's why I highly recommend hypnotherapy.
Good news is, the physical addiction can be kicked in 3 days, and your body wont be addicted to nicotine any more. After that, it's all psychological!