I n your writing you must make your ideas not only clear for yourself, but also for your readers. Being organized is a matter of balancing these two concerns - your ideas and how you convey them to your readers. Throughout our day we rely on planners and reminders. We also build lay outs, use street signs and make schedules to help us find our way.
Writing is much the same way.
When you write on a topic, it must first be clear in your own mind. Your audience must be able to follow the progression of your paper. You can't be organized if you are unclear about your own ideas. Readers need road signs to guide them just as travelers do. With these two elements of organization in mind you can then begin to devise a style of organization that meets not only your needs, but the needs of your audience.