Or: do as I say, and not as I did.
What I did was to fail to back up my site. My old (private and password-protected) family history website, that is. Oh, I still have the information (in gedcoms, files, notes, photocopied documents, and so on), but it’s scattered all over the place. And I lost some of the brief (and sometimes not-so-brief) narratives that I had written, and which I now have to rewrite from scratch if I want to publish them here.
Most annoyingly, I lost my account of how James Lahey killed his brother-in-law Daniel Lahey by hitting him on the head with a block of wood, leaving James’s sister and Daniel’s wife Catherine Lahey a widow with numerous young mouths to feed. It was a shocking act of violence, and a family scandal the effects of which reverberated for several generations at least. As a child, I heard a version (not entirely accurate, but accurate enough, as it turns out) almost a century and a half after the fact, and it left a powerful impression on me. So I think this one is worth rewriting.
But I should have backed up my original account, of course.