the more empty the house, the bigger all the rooms look. with stuff in, they look smaller.
Find out the market price for your house in your neighborhood.
Finally, you need to set the price that you'll accept. The best way to sell a house? Sell cheap, but that's not always something you can do, so you have to decide at what point you *have* to sell vs really want to, etc. It'll help the anxiety.
Understand the market isn't back up yet and prices of houses are coming down. Selling takes time and you can help. Post pictures in places, etc.
I saw something recently that a realtor did: www.9008kingscharter.com
Pretty cool - register the address, put whatever you want up on the page and it's easy to look at. Then you can put the address on facebook, everybody will see it - ask friends to comment and you'll get lots of free publicity as everybody will see the post.