Smoking weed makes you want to drink. Drinking makes you want to smoke cigarettes. Which makes you want to smoke more weed. It was an accelerating flywheel that threatened to self-destruct, perhaps taking out the entirety of 3-space with it.
So I quit the weed. (I'll treat myself now and again, but I consider myself not to have been a "smoker" for about a year now.)
Now I'm on the patch. Or will be, as soon as I have a few more cigarettes this morning before going to work.
And then it's doing away with the booze.
"Don't worry, everybody! I clean up real good!"