When Petty wrote "Insider," he wasn't sure about it – but the song made producer Jimmy Iovine jump up and down, yelling, "We're through! That's the best fucking song you ever wrote!" Petty wrote "Insider" for Stevie Nicks, but she opted for "Stop Draggin' My Heart Around" instead, giving the song back to Petty and singing harmony on his Hard Promises version. The line "I've had to live with some hard promises" gave Petty his album title. "The tunes, they're all just hard promises," he said. "A promise you have to deal with."