There is nothing to fear but fear itself

When watching an English dubbed anime, I encountered an expression, like, "There is nothing to fear but fear itself." At first it didn't make sense to me.

So I went over to the internet and looked up its meaning. I learned that the phrase was a quote from inaugural address of Franklin D. Roosevelt. Technically speaking, it was used by Francis Bacon a few hundred years before his speech.

Kind of hard to interpret it, but I think it means "if you think there is something to fear, there it comes. But if you think there is nothing to fear, it never comes up."

Talk about a cheer-up quote. I've got to remember it.