Nothing is so bad a few small repairs couldn't make it worse. ~ Law of Irreparable Harm
I love this law. But I made it up so my fondness of it should come as no surprise.
A more familiar version is "Nothing is so bad it can't get worse," which is a law Murphy could get behind. But I prefer the Law of Irreparable Harm for its sense of futility. The act of attempting to repair, fix or mollify the problem actually causes it to worsen, perhaps go critical.