I went through the exact same things (I have to say, I love feeling like the experienced quitter for once--I've only got 10 days). I cut down because my daughter and I went on a trip, just the two of us and I barely had any time to smoke. When we got home, she and I took my last two unopened packs and smashed them and threw them out. But I held on to the opened one because I wasn't ready for "never again." But the next day I just knew, and we broke the last few in half and tossed them. I've backslid twice, but I can have one without going back completly, which helps. I can tell myself that if i get through today, i can have one tomorrow.
This is still surreal--a month ago, I didn't think it was possible, and now I'm a non-smoker. It'll happen to you, too.