Having a lot of icons that are not organized in a place which you visit a lot of times a day can unconsciously cause you to have some levels of stress, though you might not be aware about these consequences, because you are now used to have them and treat it as something normal.
It can take you less than five minutes to organize your icons and group relevant ones near each other, and yet, you do not take those five minutes to organize it, because you seem to be very busy such that there is no time left for other things. You might be busy doing all the work that you have to do, but you are definitely able to find five minutes and once a month or so organize your desktop icons in a style that makes you pleasant. Maybe, a month or two later, you might find yourself consistently organizing your desktop icons, such that it makes you smile each time you see such properly structured icons and folders.
Moreover, for most of the readers, it is highly likely that a lot of these icons might not be useful to you for the next 30 days and you still are keeping them all spread out throughout your desktop. Rather than having to organize all this junk, you can simply remove them from your desktop and turn them back when you will really use them .Otherwise, they are not there helping you, but are simply becoming a burden to you and your efficiency.
Less icons in your desktop means less organizations and reduced levels of stress. You are then not only willing to work more relaxed and focused, but you are also more fulfilled and able to be much more effective. Small changes can produce remarkable results.