We spent almost 2 years getting rid of everything we owned that we didn't want on the
boat. In the end, we pocketed about $18K from selling all of our stuff and sold our house for exactly what we owed (plus commission,
taxes,
fees, etc.). We figure that effort got us close to a year of cruising time. We did get burnt out by the end due to the rude people on Craig's List and eBay.
But I can tell you that once it's all gone, the house/apartment is empty and you turn the keys over to someone else, it will all be worth it.
One of the most liberating feelings in the world is being able to look at a small pile of stuff that will fit into your
boat and knowing this all you have to worry about.
Good luck and fair winds,
Jesse