There’s nothing like crawling around the kitchen floor–marker in hand–to understand a book’s true structure. In my case, I map out arcs for every character.
What’s an “arc”? Good question, because it’s a bit confusing. Sometimes you’ll hear “ARC” and it means “Advance Review Copy” for a book that has not yet been published. Other times, writers use the word “arc” to mean the highs and lows of a plot or character.
If you think about the story Cinderella, there’s a very basic plot arc at play.
In my own writing, I like to have an abundance of highs and lows to add extra excitement to my plots. Looking at plots as a visual graph, helps me analyze if there is enough balance. A book with too many low moments would be uncomfortable to read. A book that was super happy, would be ridiculous. Finding the right balance takes time, practice, and an enormous amount of revisions.
P.S. If you’re interested in finding out more about plot structures, I highly recommend this post by G.P. Ching called: Writing Novels Using The Circus Method.