You must be a deeply anxiety-ridden person, otherwise chain-smoking is not possible; chain-smoking is a by-product. You must be so concerned about a thousand and one disturbances inside, you must be carrying such a big load of worries on your heart, on your chest, that you don't even know how to forget them. You don't know how to drop them - smoking at least helps you to forget about them.
I am less interested in your chain-smoking; I am more interested in your habit. Any habit that becomes a force, a dominating force over you, is a sin. One should live more in freedom. One should be able to do things not according to habits but according to the situations.
I have just instructed Laxmi to make a small temple for smoking here in the ashram. But you have to go very alert, aware, meditative! If you can smoke meditatively, it is perfectly beautiful. If it stops by being meditative, that too is perfectly beautiful. Life is sacred.
You may have decided again and again, and again and again you have failed - not because smoking is such a great phenomenon that you cannot get out of it, but because you are trying from the wrong end. Rather than becoming aware of the whole situation - why you smoke in the first place - rather than becoming aware of the process of smoking, you are simply trying to drop it. It is like pruning the leaves of a tree without cutting the roots.