As I type we have literally spent the morning clearing our middle room. This contained all the stuff that was in the bedroom. We were lucky enough to win a huge hypnos bed, so we were finally forced after 7 years in our 'new' home to get to grips with all the stuff sharpish. We were basically forced to revamp the whole room, having put it off for years. Floors, new ceiling, walls.
Now its done, we both look at it and its so beautiful we want the rest of the place to look like that one room. We've halved the amount of middle room stuff and the hall is full of bags for rags, charity, friends, tombola. I have found I adore giving things away. And even tho I never dreamt he could, the process (whilst stressing out OH considerably) is clearly starting to get a bit easier for him. The back rooms will be a study and studio for him next, where we will have lots of proper shelving, and all the things can be kept, neatly stored and categorised. So instead of a dozen of something in piles all over the place, we will have the best one or two of something visible to enjoy (my curators instinct lol).
We are both aware difficult lives have caused us to acquire things. We are trying to change that and realising that having a wonderful life now means we can afford to change somewhat. We will never be minimalists (nor want to be) but there must be a happy medium.
I long post I know, but a v raw topic to read about today. If I have one actual POINT - getting started is hard. But it gets easier and easier. And when one room or area suddenly looks light, beautiful and amazing, that feeling is better than the feeling stuff gives. you 
Good luck.