Why do we need ToDo list

to‐do list (plural to-do lists) A list of errands and other tasks – often written on a piece of paper as a memory aid – that one needs or intends to accomplish.
One of the most important reasons for keeping a to-do list is the organization. Organizing your tasks with a list can
make everything much more manageable and make you feel grounded. Seeing a clear outline of your completed
and uncompleted tasks will help you feel organized and stay mentally focused.

Why it is important

By keeping such a list, you make sure that your tasks are written down all in one place so you don't 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.