The biggest barrier I've seen lately is complicated showing instructions. If your agent can put "call to check availability & go!" or even better "lockbox on door, go direct & sell!" that will help so much. If you have a dog or other large pet that creates a need for an appointment (which means lost showings) seriously consider having the pet stay elsewhere or crating it when you are not home or board it every Saturday so your agent can say "go direct any Saturday" - the less complicated the better. If you are really committed to selling, get out of the way of the buyers! Let them come in as easily as possible. Vacant homes are the easiest to show, though some staging/furniture can be very helpful to the buyers in terms of visualizing the interior space. Good luck!