I know it's gross, unhealthy, a stupid habit, makes no sense.
Trouble quitting cuz it's something to do with hands, fidgety, restless, oral fixation I think, and it gets me out of the house. Can't find a habit to replace it with.
This is going to be really atypical: smoke cigars.
I never really smoked cigarettes so I never had an addiction with them. But I do like cigars. I smoke them occasionally, as do most people with few exceptions. I've heard, though, from some former cigarette smokers that switching to cigars helped them mostly painlessly stop their addiction to constantly smoking cigarettes by instead just having an occasional, even maybe weekly, cigar. Cigars may be more intense but also don't have all the chemicals and crap that some cigarettes have, and cigars even intentionally remove some of the chemicals that cigarettes may add, like ammonia.
goddammit that is so stupid it might actually work! I don't have a problem with quitting, did it dozens of times, but sooner or later always had the famous "only one cig".
gonna go for a cigar when that happens next time π