LeAnn Rimes is 30, and ready to get back to what she does best ... make music!

The stunning country songstress opened up about her recent treatment for stress and anxiety, her relationship with Eddie Cibrian and the inspiration behind her latest single "Borrowed" off her upcoming album Spitfire.

Rimes admits to Leno that the song is about her very public affair with now-husband Eddie Cibrian. Watch her talk about her recent treatment below.