You should check out Flylady.net or her book.
*I never organize my donation stuff; I simply bag or box the stuff and drop it off at Goodwill. I do make sure the stuff is clean and serviceable, but I simply don't have time to make it pretty.
Check with Goodwill, The Salvation Army, or St. Paul's. Our different charities have different pickup policies. Here if you have a large piece of furniture, they will take other items on that pickup. One of my favorite flylady tips is to bag and place your (21 bag-boogie;find 21 things to donate or trash and tie the bags) items in the trunk and drop if off on your next car outing. Out of sight is out of mind and no second guessing.
:hurray::hurray::hurray: You can do this one step at a time. Keep going, you're an inspiration.
Not wasting is good, but think of yourself as blessing someone else with your unneeded things.