when it comes to my comic, i`m becoming surprisingly organized. I have a folder with all the pages in order and with titles like "page42A" and "page42B". Also as a rule of thumb, i always have a back-up of those pages in my mail.
And when the folder gets messy, i go to the "view", "clean up by name" option and it sorts it out.
The book where i take notes, do scripts and drafts before drawing the official pages.....that one is chaos and hieroglyphs. At least i understand my writing.
For other things besides my comic....... Let`s just say is a work in progress.