Great progress everywhere but here, I think! Well done comrades!
I broke the prescribed order, yesterday, and dealt with my toiletries and first aid stuff straight after clothes. Made sense to me, because I've been struggling with bad cold and chest infection since Christmas Eve, so trying to make a start on the more manageable categories (definitely not books!). I can sort of understand some of her order, now, because pulling out all the toiletries has displaced a whole load of other crap: notebooks, pens, blood pressure monitors, old alarm clocks, Swiss army knives... I'm not ready to sort those just yet, so to clear a drawer for the newly sorted toiletries, I've had to dump all that other stuff into another drawer. That did not feel good.
Welcome to new joiners.
Catsofa (is that "cats of a..." or "cat sofa"?) - I'm going to have to deal with legacy stuff from my late father, so I sympathise with your situation. I now realise that, until I committed to clearing my living space, I've been avoiding even thinking about that stuff, much less engaging with it. I'm starting to feel like if I can reduce it to a handful of things that really mean something to me, I will engage with them frequently, and that seems a better memorial to my dad than the rather-intimidating museum exhibit it is at the moment.
I totally agree with about iqueen about the process being contagious: My husband is actually talking about getting rid of ... a watch! 
I know that sounds silly, but it tells me a) he is paying attention to what I'm doing to my stuff; b) he recognises it as a good thing and c) he's starting to wonder how he might apply it to himself. We'll see how it plays out.
JKS, my best wishes to you and your husband.