I'm the same way. If I can remember what chapter a certain part is in, it's usually one of those critical parts that I thought and thought and thought about, finally got to write, and was happy with.
So, next logical question for everyone: What are some of those pivotal parts you've written that you're most proud of?
As I mentioned before, I think the scene where we finally learn how Nick got that MINE carved into his skin in It Stays was a scene I was really proud of and that was really hard to write!
Nick's birthday chapter in Seasons of Change because it was totally personal to me and actually happened in my real life.
The reveal scene in Shadow Woods when Kevin explains to Nick what the heck was going on.
Having other Nick kill Nick was another one lol for obvious reasons.
I think for all four of those, I couldn't wait to get to the climax and write it out. LOL
I actually think I have one of those moments in every story i've written. A certain scene I can't wait to write and am really proud of, as we all should have in each of our stories, but those are the four that most stick out in my mind.