First, you need to tour the competition in your immediate area that is equivalent to you - similar number of bedrooms, bathrooms, elementary school, subdivision, basement, garage, etc. Know what they are going for and their condition, updates, amenities, etc - yes, they are all your competition, but we can't address all of them, so lets address those in your immediate area.
Next take a serious look at your home and compare it realistically to what you have just seen. The realtor you have chosen (and who has helped you look at the competition) can help, but if you have a trusted friend, the one who you really trust to tell to give you the honest truth even when you don't want to hear it - you know the one who will tell you when that dress really does make you look fat and you believe her, ask that person to go through your home with you as well and be brutally honest with you, so you have the opinion of someone you trust who isn't just trying to get your business.
Now, sit down with your realtor and discuss how to make your home stand out from the competition and how to do it at minimal cost. Do your bathrooms and kitchen need updates or just a really really really thorough cleaning?? Trust me, those two rooms have to be so clean that it looks like they came out of a decorators magazine. Every window needs to sparkle (as does all the glass in the house). curb appeal is important, you are moving anyway, so pack up and put it away. closets should not look crammed - there should be 2 empty coat hanger spaces for every coat hanger that is used or the closet looks too small. fresh paint in current colors is a must (not just white or off white anymore, there can be color, but it has to be the right colors). Your realtor will go through the home with you and help you to look at all the little home repairs that you have been looking at so long that you haven't been seeing them. The buyers will see them, so fix em now before a buyer says -ooo they haven't been taking care of little things, so they probably haven't been doing the big things either. from paint scuffs to doors that hit the walls when they opened and marked them, to making sure that any outlets that have 3 prong recepticles are really grounded. If you are in an area that requires a municiple inspection, go on and get it done and take care of anything that they say is wrong - shows the buyer that you are serious and that they won't find much on their building inspection (many sellers go on and do a building inspection so they can fix those items in advance also). do a home warranty, stage the home (stagers can work iwth your stuff as well as theirs, but don't be insulted if they tell you that some things need to go into storage for a bit, they are dressing your home for the prom, not for day to day living).
As realtors, we do this on a daily basis, so we know what to tell you when we go through your home with you. The big thing is you have to be willing to listen to us. I can list some things here, but it takes going through your home with you and seeing your home to know what specifically you need to do.
There are buyers out there. The phones haven't stopped ringing at our office over the past month with buyers who want to buy a home and we have people who are writing within a week of starting the process, BUT, we do have some who are getting overwhelmed with what they are seeing, so you have to really stand out, to get them to get off the fence and make the choice.