Success story here. My volume was 20-30 ciggies per day and worse if it is happy hour day. My last stick was like 8 years ago.

First off, I seldom hear where guys manage to quit when there are no real strong motivations. You must find your reasons.
You just cant quit because you think ciggy is expensive or your family members berates you. Weak reasons wont work.
If given choice between a lunch and a pack of ciggy you will choose ciggy, I know I did.
Strong motivation examples:
#1 Wifey got pregnant.
#2 You go for some sort of medical checkup. Doctor show your lung x-ray all blackish, you got scared/kiasi.
#3 You cough up red colored phlegm, you got scared/kiasi. (actually you just 'heaty' lol).
My reasons
#1 I got self-conscious when french-kiss with gf.
#2 Was training for half marathon.
#3 I was very annoyed by my constant coughing all year long. I am getting old, I simply think it is time to quit. This was my strongest reason.

Anyhow, here is my method. The gradual reduce ciggy intake, or vaping, or rolling custom made ciggy never work for me.
When I quit I go from 20-30 ciggy per day straight to 0 ciggy, meaning totally stop.

I figure there are only two reasons for the desire to smoke.
#1 Nicotine level in blood stream. This is backed by science, so ok. I counter this with nicotine tablets(expensive) and nicotine patches(cheaper).
#2 Habits/peers pressure/beer. This is purely willpower. Since I already taking nicotine tablets/patches, so am I really so weak minded? Just bear with it, there are no excuse.

First day is most excruciating, then better and better for the next 6 days. By the eighth day already getting used to it.
If remember correctly I used nicotine tablets the first 7 days, then patches for the next 14 days.

Hopefully this post help others.