Working with To-Do Lists : To-do lists, when effectively used, can help you stay on track and accomplish more in less time. However, when it comes to creating your to-do list, you can't merely place tasks to be completed on the list and call it good. To-do lists are most effective when you prioritize the tasks on the list. One method that you can use to prioritize your to-do lists is the Eisenhower, or Time Management, Matrix.