Apartments filled to the brim with useless items, rooms that no longer provide livable space for their inhabitants: These images have brought the hoarding syndrome to the attention of a wider audience through television reports. And these are not isolated cases; more and more people are struggling to part with things they no longer need and to maintain a basic order in their immediate living environment. From a psychotherapeutic perspective, there are currently only a few plausible explanations for the phenomenon of voluntary-involuntary cluttering. This book offers an innovative approach. It demonstrates how closely the hoarding syndrome is linked to obsessive-compulsive disorder: The flip side of the compulsive "must" is the "won't do it." Rehberger attributes both to severe attachment disorders in early childhood. Compulsive avoidance leads to chaos.