Before doing all such things, you should consider the actual basics. You must make or ask someone to make and analyze your natal chart. It might be that Saturn is actually helping you in your life and the problem lies elsewhere. Thankfully, banishing planetary enegies by means like that in Golden Dawn cause no effect other than potentially angering Planetary Spirits and making them turn away from you (which although answering the goal of banishing, still it is something totally different).
Also, even in case when some Planet is actually making your life harder, it means that you must find ways and means to please it and in no way banish it.
Planetary Spirits are part of Celestial Sphere. Those Spirits, which might cause you become victim of various addictions, are of Infernal Sphere and rarely of Terrestrial Sphere. The mere adhering to Higher Spheres makes you more impervious to the harmful influence of Lower Spheres.
Don't make enemies in the High Places. As far as I know, a lot of members of Golden Dawn, OTO and similar Orders (including members of very high standing) were addicted to smoking and various substances, so it doesn't look like their approaches are actually working.
Also, there are some Magic Operations, which might help to get rid off addictions, but they must be made by someone outside. As you are already free of your addictions. And those Operations don't include anything like "banishing Planetary Spirits", they involve, for example, making stuff like necrotic links, so each time you use some bad substance, you start getting feeling of dread unless you stop using them.