After reading GTD, I came up with the way-oversimplified system I've been using the last decade: One text file, 'CurrentTasks', where I keep my To Do list, wri

After reading GTD, I came up with the way-oversimplified system I've been using the last decade: One text file, 'CurrentTasks', where I keep my To Do list, writing down notes on everything that I need to do or remember, sorted by urgency/priority. The top of the file has stuff that needs to happen in the very near term, scrolling down brings in to view longer term things. As I finish something, the task and any associated notes gets copied into the Logbook file, see next. I keep a second file, Logbook<YYYY>, e.g. 'Logbook2018', where I keep notes, by day, on everything I did. I keep the files in a Dropbox folder. The system has worked reasonably well across a PhD dissertation, two jobs, three continents, four internships, a number of hard drive failures, and half a dozen moves.