How do writers write?

I often find myself asking this question; how is it that writer's compose such complex plots and characters? I found this collection of authors' notes in an article on Daily Mail; it gives an interesting insight into the minds behind some of literature's most famous texts. The contrast is striking between the messy scrawl that plans Plath's The Bell Jar and the highly organised chart that plots out Joseph Heller's Catch-22. 

Starting with my personal favourite: J.K. Rowling's plan behind The Order of The Phoenix where you can notice inconsistencies between the original plan and the published text (such as Umbridge's first name!) :



Sylvia Plath, The Bell Jar 


Henry Miller, Tropic of Capricorn

Joseph Heller Catch-22


Lily x