Get organized

So I sit here with a desk piled high with papers, and the neverending miscellaneous. That sums up my need to be organized I have so many miscellaneous boxes it’s ridiculous. So I’d like to first get my desk/office organized so I can get to my computer without going through an obstacle course and see the floor next to my desk. Then I’d like to tackle my closet… A closet as big as a bedroom is not a good idea it just makes more space to shove stuff and throw in boxes and “miscellaneous” whenever a quick clean up is needed. Then I want to tackle my “storage closet” which has become the box full-o-misc boxes. I started to go through some the other day and seriously I found so many cool things I forgot I had not to mention probably hundreds of dollars in change. So where to begin, where to get this motivation… How much to do at a time without getting burnt out? I HAVE to start somewhere!