My room is also pretty much always messy. And as I'm sure many other teenagers will be aware, despite the fact that your parents never spend ANY TIME in your room - you have to keep it tidy. In my case, I don't care if I have to wade through a foot of discarded clothes/shoes/bags/paper/wrappers/old cups of tea to get to my bed but apparently my mum does.
So I started to tidy up my desk after being nagged since the dawn of time by my mum to do so, and it soon became evident that it had been messy for longer than I realised. I found some really weird crap on that desk - for example I found a lesson timetable for the recorder teacher at my primary school, but neither me nor my siblings actually took recorder lessons, so I have no idea how the document ended up in my possession.
I think it was a sign I need to be tidier and more organised. But hey, I'm a busy lady - and when I'm a billionaire I'll have people to do that for me right? (do not know how I might become a billionaire but I'm working on it)