Gabriel, I couldn't agree more! In fact one approach I take with clients who are really struggling or overwhelmed is to do just that. We start by completely emptying one space. Sometimes it's just a closet or a shelf or even a drawer. Which space doesn't matter as much as the end result. The idea is to give people a chance to experience the peace that an organized space can provide. 9 times out of 10, clients will tell me how much they love opening up that room or closet or drawer and just knowing that one little area is clean and organized brings hope.
It's great if you can help people resolve whatever is causing them to allow their homes to become cluttered. I've found that working through the decluttering process is different for each client yet I've never witnessed any client who didn't feel that their life was dramatically improved by learning to let go of "things" to make time for what's important... spending time with those you love.