This isn't a new lesson or self-revelation, but I'm reminded of how much stuff I keep that should be thrown away.
My office is filled with all kinds of stuff, most especially old files from my youth ministry years and my exec pastor years. I've tried to keep the files to a minimum, but I've failed. So, I still have folders with planning information for events we tried once that failed, and events we did every year -- but with signup sheets that are completely irrelevant and unnecessary.
Unfortunately, this is not a new or limited experience for me. I like to collect stuff. Over the years, I've had collections of baseball cards, coins, postcards, Hard Rock Cafe hurricane glasses and shot glasses and guitar pins, books, DVDs, wooden toy cars...