Miranda Lambert penned this empowering anthem to inner strength with Natalie Hemby, who's been writing with Lambert since 2009's Revolution, and Taylor Swift hitmaker Liz Rose ("Teardrops on My Guitar").
The song originated from a late-night text message sent by Lambert to Hemby. "One time, [Lambert] sent me a text in the middle of the night," Hemby recalled to American Songwriter. "It said, 'like fireflies in the rain.' I think she was watching a storm. I texted back, 'I'm the keeper of the flame.'"
Lambert and Hemby later hashed out the rest of the song with the help of Rose.