re: Anyone quit smoking cigarettes?

Nicotine is physically out of your system in 3 days. If you quit cold turkey, your home-free after 3 days. (I appropriately quit on Ash Wednesday 2022.)

Just don't surround yourself with humans or other triggers that you'll regret going ballistic on when they unknowingly annoy you, and subsequently make you want to smoke out of stress.

Take PTO/vacation days, turn off your phone and hide yourself in a room with a tv/computer. Drink low-calorie fluids often and don't relpace the hand-to-mouth motion with food or else you will blow-up bigly.