Starting the year with some reading:

From Quartz

I'll admit it: "The Life-Changing Magic of Tidying Up" actually changed my life (A breakup story that led to clearing out and decluttering.)

From Don Aslett

Clutter's Last Stand (My favorite text on the subject - he has several titles you might find useful.)

And in case you wondered, there is an OCD aspect that takes things too far.