I'm back on nicotine, too.
I quit smoking a year or two ago by switching to vaping and gradually reduced the nicotine dose to zero. I fell off the alcohol wagon for a few days and bought one of those disposable vapes. I haven't drank since, but I've been wasting a small fortune on those vapes.
I keep telling myself I'm going to quit again, but I've got a lot going on right now. I'm looking for work for the first time in 12 years and recently quit smoking weed. I'm afraid of changing too many things at once and having a major relapse and ending up on harder drugs again. Or at least that's what I'm telling myself.
Wishing you luck comrade!
There's a book about this called, "A libertarian walks into a bear". I enjoyed it.