I do not recommend my method for getting rid of clutter but sometimes drastic is the only thing that works.

I have a table that all my mail is on. All papers, personal correspondence, comics that my family thinks I'd like, sales papers, coupons etc.... Well it gets pretty bad after awhile so I'll grab a pile but then my ADD kicks in and I lose focus. Then I get tired and I'm depressed and I put the pile back. Well one day it hit me. "HEY, I haven't touched this crap for more than a year. How important could it be??" So I got a trashcan and simply swept everything off the table into it. Once I had a clean table to work with again I was able to keep it from building up.