The price is the first thing buyers notice about your property. If you set your price too high, then the chance of alienating buyers is higher. You want your house to be taken seriously, and the asking price reflects how serious you are about selling your home.
Several factors will contribute to your final decision. First, you should compare your house to others that are in the market. If you use an agent, he/she will provide you with a CMA (Comparative Market Analysis).