Clutter may seem like simply a matter of too much stuff or a lack of the proper system, but the underlying reason is often one of the two big P's - Procrastination or Perfection.
Procrastination is, by definition, to put something off intentionally or habitually. In other words, choosing to do something later that you could do now. How many times have you told yourself you would finish that report later, or fold that laundry this afternoon, or have the kids pick up their toys tomorrow? Every time you choose to delay doing something that you could or should do right now, you are procrastinating.