Price it right.
Write a great ad that emphasizes why people would want to live there.
Clean out all the junk and put about half your belongings in storage—especially excess furnishings, closet clutter, large toys (those that do not fit on a shelf or in a toy box), and family photos.
Wash your curtains, make sure your window shades and blinds are in good repair, and hang a new shower curtain with matching towels and bath mat. Put out fresh new soap when the house is shown.
Repair anything that is obviously broken or unsightly.
If you have any DRAMATIC decor (e.g., purple walls, large-patterned wallpaper), replace it with neutral colors (that doesn’t mean white, but something soft and easy on the eyes: a sunny beige, a pale gold, a sage green, etc.).
Pull up the shades and let all the light in.
Turn all the electric lights on whenever you have a showing.
If you smoke, have the house fumigated and stop smoking until after the house has sold.
If you have an open house, put fresh flowers in each room and light a fire in the fireplace. Set the dining table simply but elegantly. Play Strauss waltzes or other pleasant classical music at very low volume.
Keep the outdoor area clean and trimmed–if your landscaping is sparse, add some large potted plants around the front door. Replace your mailbox and house numbers if they are shabby.
Make sure people can walk through your basement, attic, and garage and see how spacious they are.
Don’t be home when the house in shown—let your realtor do the showing.
Good luck!