Cleaning Your Workspace
The first pivotal step in having a workspace you can be proud of and productive in is making sure it is clean. First things first: de-dusting. I don't know about you, but my house and workspace gets dusty incredibly fast. I strongly recommend purchasing a handheld dust collector such as a swiffer wipe, and de-dusting every surface in your workspace/entire room once a month. I personally have made it a habit to de-dust everything on the last day of every month. At the same time as de-dusting, I recommend cleaning your computer monitor(s) as well. I can't count how many times I'll see a perfectly fine workspace accompanied by a monitor so smudged it looks like an oil painting. The video below will guide you through cleaning your monitor safely.
After de-dusting and following the above video to clean your monitor, you can start a base level of sorting clutter. If you have a significant amount of loose files, miscellaneous gifts, fidget objects or even collectibles it's important to remove them all for the time being, and then deciding on what is truly necessary. Loose files will be tackled in the Sorting section - as for clutter, much of it can surely be used in the decorating section, but if you've let your workspace build up with a lot of random junk it's best to remove it entirely unless you have a specific aesthetic in mind. It does come down to a matter of opinion, but I believe a minimalist take on deskspace is much better than a desk with many trinkets. It doesn't mean you have to remove these things forever - I have a space next to my desk on a little table for such things, or a shelf placed elsewhere in the room. The desk itself, however, should be kept clean.