Imagine that you have to move and decide what are you willing to move yourself.........that will certainly reduce the amount of "stuff". Am doing that right now...I have been in the same house for the past nine years.........Woah! it's time to review and reduce my belongings. (I'm even going through the Christmas Cards, donating extras to charities.)
As I mentioned before we can't address your Feng Shui issues if you are bogged down with clutter.