++1 on Flylady. It's helped me alot, and I only do the very basics. Granted, I got divorced and moved, and moved very little stuff with me. It's LIBERATING to not have so much stuff--something to keep in mind when you are tempted to buy things.

My first rule is to be VERY careful about bringing stuff in the house in the first place. I hate shopping, so that helps already. But really think before you add stuff.

My issue is with mail. I bring it in and let it pile up, sometimes for a week. My solution is to log it in a notebook. That way, I have to acknowledge what I receive, who it's from, and what I did with it (file, respond, bill). It's helped me deal with it right away.

Ebay could work, but it sounds like an awful lot of hassle to me! And then you have to find the item when it sells...which might not be so easy unless you are organized...which if you were, you wouldn't need to be selling things on ebay to start with!

Check out Flylady, and remember that you don't have to do everything at once. And you don't have to be perfect.