Some Agents list homes and hope that they sell, others market them to sell. There is a difference! Since you have decided to sell your own home, make sure that you can reach an audience outside of the zip code the state, and yes, even the country. Internet is a wonderful took if you know how to use it.
Open Houses do work if done properly with plenty of preparation..Advertise, make up flyers and walk them around the neighborhood, sometimes, your neighbors can be your best advocates.
Good luck to you, let me know if there is anything else that I can do to help.
One thing to remember...if you are selling your own house and without an Agent, take precautions...you want to know who is walking through your house, have they been qualified to purchase? and the like.