Over the last few years, I have tried a number of productivity apps for todos and task management: Todoist, Trello, Things 3, Google Keep, Evernote, OneNote, Emacs org-mode, etc. but nothing stuck. The pattern is: In an initial burst of enthusiasm, I create a large-ish initial todo list by making a brain dump of tasks in a productivity app. The list then languishes. Rinse and repeat when I come across (yet) another promising app. Why does this happen?