Want to get control over the clutter in your life? Start in one small place. It can be the top of your desk, for instance. At the end of your work day take 15 minutes before calling it a day and tidy your desk. Do whatever filing remains. Make a list of the things to tackle tomorrow. Put pens, pencils, markers back where they belong. You will be amazed by how much you can accomlish in these few minutes and by the relief you feel the next day when you see your desk.
Try it and let me know if that makes a difference.