I very much enjoyed this paragraph of a Keith Robinson Life Hacker piece on overcoming the piling habit:
Don't forget the trash can
A trash can or recycle bin is a reformed piler's best friend.
Anything you put in it will be out of your way forever. It's really
amazing how great it can feel to throw something away for-ev-er. For
some people it can be hard, so start slow. Go through your newly
contained stuff, or your existing piles and trash those things you'll
never need or use again.
Check it out, man! I just put stuff in this box and it will never bother me again! Amazing!
I bet you have one of those magic boxes too. Maybe you should fill it up today and put it out where the magicians will transform it into an empty one. Abracadabra!!