One of the most formidable tasks in preparing a property for the market is the de-cluttering/cleaning out process. This is very much on my mind as I watch friends in Lakeville, CT and Ancramdale, NY, currently engaged in this process. Obviously the task can seem physically and emotionally daunting. An important fact to remember is that you don't have to do it alone.
A bit of a control freak myself, the idea of allowing someone into my process (asking for help), is normally the last thing that I want to do. However, another person can often see the task objectively. Fortunately, there are people to hire who specialize in cleaning out and helping organize for a move. Your real estate agent will normally know of someone reputable whom they can refer. Consider renting a dumpster, small or large. This will expedite the process enormously.
If your financial resources are limited, or you just can't bear to allow a stranger in, consider asking a friend or family member for help. You will probably be surprised at how glad people are for a chance to help out. It feels good to be asked!