last week i pulled this pile of clothes from my front closet for donation. (the top of the heap is over four feet high*.) it only took about 30 minutes; a good way to stay motivated is to play an album, even an EP, & tell yourself you MUST stay moving during that time. you can do 30 or 45 minutes easily & you'll feel much better.
if you're at work, go around your job right now & look for a couple of boxes, or ask at the supermarket, or raid recycle bins. once you have them at home it's that much easier to round up stuff with which to fill them (& also easier to stay motivated once you get home; i know how the post-work sinkhole can suck the energy right out of you).
let us know how it works! was it harder than you thought? did you come up with any tricks?
* no, the donation pile is not haunted, i was in a hurry & COFFEE'D UP