Welcome! All the things you learned from choosing to stop drinking & the tools you used also apply here. With addictions, as you know, the "just one" doesn't exist. One always leads to one more and then another and another. You chose to quit smoking already so you don't need to decide whether you will smoke or not ever again. Kick smoking thought(s) out of your head immediately each & every time replacing such negative self-talk with something positive of your choosing to fill the void (what 3-4 mantras/sayings will you repeatedly tell yourself instead?). Some find straws, cinnamon toothpicks, hard candy etc. helpful in the early days.
I'm a believer in lists so I could refer to them when my "lizard brain" was trying to tempt me back into the clutches of the Nic O. Demon. One of the lists I made was all the reasons why I wanted to Be Quit. Another list was of physical distraction activities I could use like taking a quickie walk, a few yoga movements, getting on the treadmill, meditation, etc. I also kept track of the benefits I noticed I accrued from my Stay Quit (mental & emotional as well as physical). I added to this list & referred to it often. I also encourage you to make a list of your chosen rewards/treats you will earn for yourself at the different milestones throughout the first year leading up to the Grand One on your anniversary date from the $$$ you saved.
Never doubt that you can Stay Quit no matter what angst you have to go through to get to the other side of active nicotine addiction. Every bit of the strife is worth it. YOU are worth it. Best Wishes.