"The issue isn't space; it's too much stuff," Walsh says. Set limits on the amount of stuff you'll tolerate from the beginning. Allow yourself one bookshelf. When it's full, give away one book for every new one that you add to maintain that limit. The same goes for filing. When the cabinet becomes loaded, it's time to de-file, tossing some of the paperwork you no longer need. The long-term upkeep will be just as important as your original organization plan. More From Forbes: 20 Careers Headed for the Dustbin Top Tips to Improve Your Money Can Body Language Cost You a Promotion? The opinions expressed are solely those of the author and do not necessarily reflect the views of Comcast.