3. Use mind mapping, it’s the only way to take in your complete novel at a glance
It’s impossible to keep the story of your novel in mind as you write, let alone all the ideas, and decisions you’ve made about character and plot.
A quick check of your mind map helps you to take in your story, almost at a glance. I always have one section of a novel’s mind map titled REMEMBER. This is for character attributes (a character has a habit of sniffing, or blinks rapidly when he’s stressed), foreshadowing, sudden ideas for backstory, and so on.