Taking inspiration from the always inspirational aliera9916, I have my own quotage to share:
“Writing a book is a long, exhausting struggle, like a long bout of some painful illness. One would never undertake such a thing if one were not driven by some demon whom one can neither resist nor understand.” ~ George Orwell
I have long thought of the main character of my novel as my muse, and probably it is the case that I have multiple muses, and they are always my characters. But to think of the urge to write as a demon is an interesting stroke of insight. For what could “possess” me to sit at my computer for hours a day, pounding on they keyboard like my little icon demonstrates? I always thought it was my characters, begging to have their stories told, giving me no peace until their voices were heard.
But what but a demon could force you to work for not months but years, neglecting the rest of life’s other pains and pleasures?
This demon is an incessant need to put words on a page, on a screen, spewing them out like a scream, like vomit, like one of those really, really long urinations you have after you’ve been forced to “hold it” for hours after drinking way too much coffee.
Oh, ho, get your metaphors and similes here.