The average person has $5,600worth of junk just sitting around their house, not being used. 

The most common things you don't use but could sell are old clothes, DVDs, shoes, toys, computer games, sports equipment, old cell phones, stereo and music equipment, and bikes.

Plus your clutter stresses you out. 

12% refuse to throw things away because they might need it one day.

20% of people have enough clutter to fill an entire bedroom from floor to ceiling. 

(This is Money)