I had built quiting up in my mind so much that I thought it was going to be impossible and the withdrawls would kill me. I too had some NRT's (just in case) but not needed.
Turned out, the withdrawls weren't as bad as I thought, tough, but doable, I did take a week off work for the battle. Alan Carr talks about this overwhelming feeling in his book. I read the book as I was trying to quit, your supposed to read the book and then quit lol.
I have no doubt in the near future you will be free from this terrible .. horrific addiction, you seem very wise and determined.
All the best!