NOPE was one of the things that got me to where I am today. I am still pledging after more that a year quit, with no plans to stop.
For me, NOPE was a promise to myself that I would not smoke, just for today. It was my line in the sand - once I'd posted my commitment, smoking was no longer an option. In the beginning, I would tell myself that I had already pledged NOPE for the day, and if I still wanted to smoke tomorrow, then that's fine, just not today... I would deal with tomorrow, tomorrow! And if I couldn't keep a promise to myself, then what good was I, and did I really want to be that person who can't even be honest with himself?!
Also, for me, the comradery of the pledge... It wasn't just me pledging, its all of us - we've all pledged not to smoke TOGETHER. We were all in the same boat, and that is a really big deal for me.
Some days (most days) I would pledge NOPE as soon as I woke up, or if I was feeling particularly week, stay up past midnight so I could pledge before I went to sleep... There were a few days where I woke up pondering if I would smoke... I didn't pledge for a long time those days, and they were horrible days where I would fight with myself... When I would finally pledge on those days, probably on the afternoon, then it felt like a weight was lifted from my shoulders.
Rest assured, if you see me post NOPE, then it is an absolute guarantee that I will not smoke, just for today.
NOPE was and continues to be an integral part of my quit.
I hope that makes sense, and it helps someone.