Cluttering is a complex behavior with some aspects of addiction as well as some learned behavior. Clutterer's Anonymous is an excellent resource that will help you understand the problem and provide support and tips for overcoming this common difficulty.
http://sites.Google.com/site/clutterersanonymous/Home
I would start with "The Joy of Less, A Minimalist Living Guide: How to Declutter, Organize, and Simplify Your Life", you can purchase a copy on Amazon for $12.00.
While you can't "do" a speech impediment, Churchill was often described as having one. Various artists alluded to his stutter, which he constantly worked hard to repress. Conversely, the Churchill Centre refuted the claim that Churchill had a stutter, but did confirm that he had trouble saying the letter "S," much like his father. The Churchill Centre also put forth the possibility that Churchill 'cluttered' as opposed to having a stutter. A stutterer can process their thoughts clearly in their minds, but has trouble portraying these thoughts into verbal speech. A clutterer, on the other hand, can from these thoughts clearly as well as verbalize them, but often becomes disoriented or loses interest midway through a sentence, causing their words to get jumbled up. Churchill's battle with his speech impediment, whatever it was, was a well-fought one. He refused to give up, an idea that coincides with his values. After many years, Churchill was finally able to say, "my impediment is no hindrance."