For more information...
You know that one of my specialties is Hoarding Disorder. I find myself recommending the same books over and over again. These books and websites and organizations have quality information. Maybe it will mesh with you, maybe something else is a better choice. Give them a try and see what is helpful for you.
Resources:
https://www.facebook.com/BeConstantlyCurious/videos/137386723594045/
“Stuff: Compulsive Hoarding and the Meaning of Things” Randy O. Frost, Gail Steketee
“The Life-Changing Magic of Tidying Up: The Japanese Art of Decluttering and Organizing,” Marie Kondo
“Daring Greatly,” Brene Brown
Clutter image rating 1 to 9
http://hoardingdisordersuk.org/wp-content/uploads/2014/01/clutter-image-ratings.pdf
http://thehoardingproject.org/home/
https://clutterersanonymous.org
Hoarding/Cluttering Support Group on Facebook is very supportive and positive.