Don't feel dumb!
I rememebr I used to have big chocolate feasts, I mean even though I was aware of what calories I was eating, I could eat a while bag of chocolate raisans, minstrels, malteasers- easily 1,500 calories without even forcing myself to think and stop! No wonder I was so chubby *facepalm*
I had cravings for jellybeans not so long ago, but for me, it was important NOT to cave in to an extent...I personally know that I wouldn't be able to stop at just a few, so I refuse to let myself buy them. Next time you're getting the urge, stop to think about what it is exactly about the kit kat you want so much...it might help you realize that there's nothing extraordinary about them, certainly nothing worthy of breaking your fantastic run of weightloss!