I sort my stuff, periodically.
If I haven't used it in a year and it's still good it goes into a donation pile.
If I haven't used it in a year, but it's needed if we have company-I quickly invite friends over so I can say I still use it.
If it has emotional attachment issues, I take a picture of it. Write down everything I remember about and put in my photo album or computer scrap book. Then put the item in a box on a shelf for the next year's purge. Sometimes the photo is enough and the following year I'll donate.
Clothes-I'm bad about clothes because I fluctuate sizes so much. I have 2 wardrobes-one size 14-16 and another 10-12. I put the small size in storage, and try to donate the ones as I out grow them.
Have you check out flylady?
http://www.flylady.net/pages/FLYingL...luttertips.asp
If you give to charities you can write it off as a donation for tax purposes. Just get a receipt when you donate and keep records of what you have donated. Think about all those people who may be helped by your donation.