On New Year’s Day 2023, I decided to try something new. I have long kept scattered notes about the things I consume. This includes books, movies, TV shows, music, and various other things. But these lists and such remain, well, scattered. Over the past couple of years, the writer Ryan Holiday landed on my radar. He is the bookstore owner who writes about the Stoics and their philosophy and how it is still relevant in the 21st Century. In my reading about how Holiday researches and studies his subjects, I learned he keeps an extensive notecard system. His research assistant, Billy Oppenheimer, also keeps an extensive set of notecards. He…