Major decision making is different than minor decision making.
A Minor decision is "I'll go down to the store and buy bread."
A Major decision is "I'll get married."
Smoking cessation is major decision and it deserves more than a hasty 11:30pm decision after the nightly news: "Ho hum I'm tired. I hate cigarettes. I'll quit in the morning. Good night moon."
You have probably done that many times.
Cigarette quitting is a MAJOR decision and should be treated as such.
In practical terms, here is what major decision-making means: