I’m a graphic designer who had to write essays in college, and would do things you mention there. I keep quotes like I keep my design inspo, etc. It’s nice to see that I’m not crazy for approaching essay writing like I would approach design assignments. A little addendum though, instead of deleting paragraphs or essay work I don’t like, I usually move them into another page in the same file (hit the Enter/return button like crazy) or, set the colour of my past paragraphs in really light grey, so I know it’s there, but make it not distracting. Feel free tosteal this idea and use it to your heart’s desire!