Organizing might seem overwhelming when you're looking at mountains of paper in your office. Let those files be for today ... take a deep breath and grab just a small box of office supplies to sort. You won't need more than 10 minutes to organize them, but you will get so motivated, that tomorrow you will organize a drawer, and the day after that a whole shelf.
You will learn the principles of organizing on those little projects and soon you will be ready to effectively attack the piles of paper.
... get inspired by those before and after pictures.