It's great you wrote, and I hope you're reading the posts in other places--just to get some hope.
I think the way to begin moving through our mess is to deal with the emotions along the way.
Fear of letting go, perhaps?
Sadness of saying goodbye to a person or a time in our lives?
Fear of not having something when we need it?
Fear of giving away the next "antiques roadshow treasure?"
Fear/Sadness of not being the person who has space for all the things?
I have a host of emotions when I'm working through my clutter/hoarding.
NONE of which are stupid.
Reading all I can, journaling and posting on these boards helped me get started...and stay started...and come back.
Also, on a practical note getting a timer that I set for 15 minutes and then declutter just for those 15 minutes helps, too.
AND making sure to have a plan in place for where the items will go.
You're in the right place.