I found that, years ago, once I made the start to just get rid of stuff I wasn't using or didn't realy need it was like a breath of fresh air. I spent years just putting off a massive clear out as I didn't know where to start. Now I get antsy as 'stuff' starts to build up so I try and keep a bit of order. But you're right, starting is the hard bit, but start small. You won't regret it
Bit of a thread hijack so apologies to the OP, I've been clearing out for about 5 years now, something has to go each week, not that you'd notice if you visited...