I have not read his book personally but I have seen Peter Walsh on Oprah before and he is a de-cluttering expert (originally from Australia). He does have a book out I think. I think he combats the emotion reasons why people keep certain clutter etc and how to get rid of it. He has some good ideas that I saw on a show a week or two ago.
I am a bit obsessive about organising books and websites. By far my favourite is "Confessions of an Organised Homemaker" by Denise Schofield. It goes beyond basic decluttering and into how to organise calendars and to-do lists, organising your kitchen (there are over 50 pages on this topic alone), de-cluttering toys and other people's belongings, paper organising (bills, passports, etc), storage, and how to begin.
You could also look at some of the de-cluttering websites around - Flylady is an obvious one.
Finally, just start throwing stuff out. Any book you buy is going to say that in order to de-clutter you need to reduce the amount of stuff you have. So start now and throw out/donate/whatever 10 things, big or small.
Bookmarks