A property that is priced correctly in the beginning will almost always sell in a reasonable amount of time, usually 30 to 60 days. Some properties are very special and harder to sell and will take a longer time because of the uniqueness of the circumstances. There are numerous reasons why this would happen and too many to list here but here are just a few examples.
Irregular shape of the property
less bedrooms than the all or most of the surrounding properties
the condition of your property in comparison to the properties it is competing with
Crime in the area
no jobs in the area
Residential property listed in a predoninantly commercial area
And the list goes on. If you and your realtor sit down and takee a good hard look at the property in comparison to what your property is competing with, the condition, the area etc. He or She ought to be able to give you a true estimate of the price you need to be at in order to sell. If you don't have a realtor yet I truly suggest you interview several and decide on one. 80% of the homes sold in the entire marketplace are sold by professional realtors.
A professional Realtor can guide you in achieving your goals. If a property stays on the market too long, the offers wills be less both in volume and offering price. Your property becomes stale inventory. Do it right the first time and do it right quickly and I'm sure you will find an appropriate buyer. If your properrty is extremely is extremely unique and unusual you may want to consider selling it at auction. I would do this as a last resort, but it certainly is an option.