If you have a pile of paperwork that you think is valuable but you can’t quite fathom going through at this time, file it away in a manner that at least groups it based on what it’s about. Then wait a few months. Believe me if you don’t find a need for it in 3 months, 6 months or a year. Whatever it takes you. You will no longer be attached to it and it’ll be easy just to toss it out. You can review as necessary, but believe me you’ll be easily able to toss it.
The better you get at this, the easier it is just to toss it in the first place, because you can anticipate that you’ll hate still having it around. Get rid of it!