GTD
Or getting things done. There are lots of apps and tools available for GTD, and I've tried a lot of them; outlook, Things, Remember the Milk and so on. But the one thing that always works for me is pen and paper. It's a lot easier to maintain than an app. I always have my notebook with me (while at work or at home) so referring to my list is easy.
• What I do is make a list with all items left pending from my previous list and add new tasks to that.
• Completed items get a tick against them, so they get ignored when the new list is made.
• Meeting notes are made on separate sheets; action items from the meeting are added to the running To Do list.
So far this has worked great for me, and until I can afford a secretary, I think this is what I'll continue to do.
Unless you, dear reader, have a better suggestion. I'd love to hear it.