I sometimes advise clients to do a "virtual move." While decluttering, imagine that you are moving. Would you get rid of this or that if indeed you were moving? If so, get rid of it now. If someone else can use it, offer it to a friend that may need it, or give it to a charity (and get a receipt for tax purposes!) Keeping something that you wouldn't want if you were moving makes no sense to keep now. Look around and see what else you would not pack. You might be amazed!
Steph has been organizing for over ten years. Her simple tips here can help you get and keep organized and add calm to your life.