I’ve used a one notebook concept since at least 1996 when I went back to college to get my master’s degree while still teaching high school and directing high school theater productions, raising 2 boy (at that time 10 and 12), maintaining a failing household, and trying to write and be creative. I moved to my ONE NOTEBOOK after misplacing my work notebook after misplacing my teaching notebook after parent / teacher conferences. (I had been juggling at least four notebooks.) I use the Mead notebook with a pocket in the middle because it fits in my purse, another plus is that it is a spiral and I can show only one page if I like. I have taken some of the pieces in the notebook from the ever popular bullet journal concept without buying the expensive bullet journal products and the time wasting designing.