The best system I came up with: 1. Get a small spiral-bound notebook, say 3x5 or whatever is sitting in the supply cabinet. 2. Write today's date on the top of the first page. Write each task on one line on the page. (You only need enough detail to remember what the task is.) 3. As you complete tasks, draw a line through them. It's more satisfying that check marks or whatever. 4. As you add tasks, just write them on…
I guess this is because people have different ways of thinking about goals, tasks and timeframes. For me what works best is a 'week todo' that contains coarser/larger tasks and a daily todo that contains more granular tasks, often sub-tasks of the weekly ones. Adopting this method has made me more productive than I've been in years.