My Mum has just sold her house after it being on the market for months. It was not a good sale - she lost $30,000. I wont go into details, except to say that one thing she should have done was take the place off the market for awhile and then put it back on again.
Once a house has been on the market awhile it has been seen by everyone who is in the market to buy, and becomes old hat. While the estate agents are supposedly working for you, they can actually be saying to the potential buyers - 'well he'd probably accept a lower price.' or 'He's desperate to sell'. These sort of comments are the agent working for the buyer, not you, and are in effect giving away your money.
I's suggest thinking about your situation. Do you think everyone in the market has seen it now - would you benefit from waiting a month or 2 and trying again?
Get a friend to come around and look at at your house and make suggestions of things you could do to help the sale. They might have ideas that your biased eyes cannot see.
Things like clear benchtops - if there is stuff on the bench it makes the room appear smaller. Get rid of clutter.
Allie