I can feel your pain. My DH has been gone for 4 years now, and I'm STILL going through his stuff and my stuff and donating stuff to GoodWill. And helped refurnish a much loved niece's new place after hers burned down. And forcing everything they would take on 5 kids, his, mine and ours. And STILL I have far more than I want, lots that I must go through before tossing it, lots that I must go through before shredding it, and lots that I have no idea of what to do with it.
And still the work goes on. I don't want to give my kids the same job a sister and I did when our Mom died, who was an even worse pack rat than either DH or I.
Take my advice, don't let your own places get to this point. Keep it Flylady uncluttered. 15 minutes at a time, it will work. Someday you or I will finish up with a clutter free house.