Looking for a business idea that can really “spark joy”? Professional organizers, like Marie Kondo, help people declutter and minimize for a living. In an age of materialism, many people are desperate to downsize and take control over their possessions, rather than letting their things possess them. Minimalism is becoming extremely popular, but people often find it hard to part with things they’ve owned for a long time. Part of being a professional organizer is helping clients develop a system for downsizing and keeping things that way.