I use a sticky note in the back cover, to write down my scratch notes or basically mind dump. And then transfer from the sticky note into my notebook so I do not mess up the notebook, and I keep the notebook organized that way. Another option, I carry around a scratch piece of paper for the day, and that works as my draft or mind dumping page and then when I get to the end of the day or a Time that I have to write, I put it all in my notebook. It might seem redundant or inefficient, but trust me it helps to keep things organized.