I was looking over a manuscript I submitted two years ago and I realize how far I've come as a writer. One of the lessons I had to learn was that a book is not a series of scenes connected by the characters. The conflicts, internal and external, drive the story. Sadly, some of my novels lacked conflict entirely.
Though those manuscripts are not publish-worthy, I loved writing them. I learned so much about the mechanics of writing, conflict, and characters.