It's not just general messiness either. I tend to forget about seminars and meetings unless I get reminded, and I neglect administrative deadlines as a matter of course. I can never remember passwords, so I write them down - but then I forget where. Worse, I recently completely missed a submission deadline (not the one I've been working on), which is not just inconvenient, but fairly serious.
Last week I got the idea that I should try some kind of computer scheduling program. I looked around a bit and found one that's gotten a lot of good word of mouth. Simple and straightforward to use, and integrates nicely with my other desktop tools.
So I try to install it, but get a message to the effect that GTG can't be updated because it's already running. It turns out I already had this idea in January. I'd downloaded an earlier version, started it - and forgotten all about it. I found it open behind some ongoing blog entries, a forgotten instance of Octave and a couple of open PDF files.
So much for that bright idea.