Have you ever checked out the FLYlady?
http://flylady.net/ She teaches how to declutter, one step at a time. I've been following her advice on and off for the past 15 years, and it does work. When we moved, I decluttered an entire attic's worth of stuff-- my husband and I joined households, and since we both already had established homes, we had at least double of most things, and all of the extras (which means an entire house worth of stuff) went into the attic. When we moved I got rid of everything, and I've discovered that I'm much happier with fewer things. I've never missed one single thing that I decluttered-- although admittedly I believe memories and feelings are my most important belongings, so I don't rely on tangible items to invoke those things for me. My mother, who is a collector, calls me a "natural minimalist." Now, I have to say, that if you saw my fabric stash, you would argue with her! But lately I've been thinking of going through it and passing along some of the fabrics to a coworker of mine who sews dresses for her nieces. Just haven't gotten to it yet. It's been a busy summer but I am hoping to take some time in the winter months to really declutter my stash and organize things.