Go through your things... you will know when it is time to part with your items. I very seldom regret giving away my unwanted stuff. On the flip side, I like to remind myself of how many times my things get lost in my house and never are found until after I needed them. Less stuff makes it easier to find the things I really want and use.
I alternate between being a hoarder and a purger. When I am in a purger mood, I focus on a particular area and try to get things out of the house before my hoarder mood hits! I also like to donate and/or sell my unwanted items, so I know someone else will benefit from these items.
Good luck with your choices.