A few ideas:
Get a trash bag and set a timer for 3 minutes. Grab anything you can that you know is junk and stuff it in the bag. Put it wherever you put your regular trash that goes out. Repeat once or twice a day until the junk is gone
Paperwork: Is there stuff that is potentially important? Things like bills, checks, contracts, policies, etc. Take a box and toss all of it in there.
Disks: I assume you mean computer disks? Put them all in one place, maybe another box.
Then, take 15 minutes and go through the paperwork box. Have a shredder nearby, or at least a trash bag. Throw out or shred anything that you pull out of the box and don’t need. Any bills that need to be paid, make a pile to pay during your normal bill paying time. (Mine is Sunday evening.) If there are things that need to be filed, make one “filing pile.” When the 15 minutes is up, spend 5 minutes filing. (If you need that long, I don’t know.) Give yourself a couple of minutes for a stretch break, but only a couple! Spend another 15 minutes sorting, 5 filing, and stretch again. I would only be able to take this for about three rounds, but your mileage will vary. It may take a couple of days, but the 15 minute shifts make it bearable. Even if you can only do one a day, you’ll make headway. Same thing will work for your box of disks.
Get rid of what you can and continue to be aggressive in not letting the “stuff” in your house.