What you put on your checklist and how you use it will depend on your situation. For instance, if you’re in a sales-type role, a good way to motivate yourself is to keep your list relatively short, and aim to complete it every day.
By keeping such a checklist, you make sure that your tasks are written down all in one place so you do not forget anything important. And by prioritizing tasks, you plan the order in which you’ll do them, so that you can tell what needs your immediate attention, and what you can leave until later.
Do you often feel overwhelmed by the amount of work you have to do, or do you find yourself missing deadlines? Or do you sometimes just forget to do something important, so that people have to chase you to get work done? All of these are symptoms of not keeping a proper "To-Do List."
Recently, The Art of Manliness provided an historical look at checklists, along with a detailed primer in deciding which lists will work for you, culled from the excellent, The Checklist Manifesto. You can implement the same routine in your daily work to help give you a greater shot at success.