"To Do" lists are useful, and responsible people use them (or hire PAs that manage them for them). Personally, I use a plain text file, ~/todo.txt (by design t

"To Do" lists are useful, and responsible people use them (or hire PAs that manage them for them). Personally, I use a plain text file, ~/todo.txt (by design the only non-directory file in my ~/), in combination with an A5 paper notebook. For the online file, stuff that gets done gets moved from the beginning of the file (heading "To Do") to the end of the file (heading "Done"). A todo command helps quickly append an item to the file without opening the file. The paper notebook includes other notes than to do lists as well, and its to do lists are meant to eventually make it to the online list (if they don't get ticked off as "done" before). EDIT: I forgot to mention that (1) for projects, I usually have separate per-project "To Do" lists, and (2) I use my online calendar to mark deadlines in it. The system works reasonably well, although the calendar could be better integrated.