I am currently writing a book and I have had the story and character ideas in my head for many years, but it doesn't seem to translate when I am writing it. I am about 35 pages in and there is one section I am extremly happy with and another I just can't get right. Most of it I am satisfied with, but not as happy as would like to be. I know which events I want to happen, but I don't always know how to get there.

I don't know if any of that makes sense, or if anyone here has written a book, but is this a normal happening? I feel like it should just flow, but it isn't.