Sorting through a lifetime's worth of accumulated possessions can be a daunting and stressful process. The need to downsize often arises at a momentous life change, whether you're an empty nester or retiree selling your family home, a newlywed blending your households, or you're cleaning out your parents' property after they've moved into assisted living or passed away. Decluttering guru Peter Walsh knows the difficulty of downsizing firsthand. Along with six of his siblings, he went through the process of downsizing his family home and dividing his late parents' possessions. He realized that making these decisions about mementos and heirlooms creates strong emotions and sometimes sibling rivalries. After this experience, he downsized his own home. Peter doesn't see downsizing as a difficult chore, rather, it's a freeing, rejuvenating process. Here are Peter's many tips and practical takeaways, such as how to: Understand the emotional challenges that accompany downsizing. Create strategies for working with your spouse, adult kids, or siblings without drama. Calculate the amount of stuff you can bring into your new life. Identify the objects that will bring you real happiness, and the rest that you should let go. Peter Walsh is the author of It's All Too Much, Enough Already! and most recently Lose the Clutter, Lose the Weight. He is a popular organization expert who appears regularly on The Rachael Ray Show and writes a quarterly column for O the Oprah Magazine.