I believe her technique is effective because it tries to combat hoarding using the same kind of emotional response that gets us to stockpile on stuff in the first place.
Others will suggest attacking the problem with logic: “Do you need this now? No? Get rid of it.” But stuffocation is as much a problem with our emotional attachment to things as it is to our evolutionary hardwiring. In my case I was finding it easier to find reasons not to keep something by doing what Mari suggests: take items into your hands and ask yourself if it actually brings you joy.
Others will suggest attacking the problem with logic: “Do you need this now? No? Get rid of it.” But stuffocation is as much a problem with our emotional attachment to things as it is to our evolutionary hardwiring. In my case I was finding it easier to find reasons not to keep something by doing what Mari suggests: take items into your hands and ask yourself if it actually brings you joy.