Kelly Clarkson has been out of the limelight for a while, but she's looking for a comeback with her new video for "Mr. Know It All."

In the vid, the first-ever American Idol winner confronts her insecurities -- headlines calling her overweight and alone.

Lyrics include: "When somebody tells you something bout you/Think that they know you more than you do/So you take it down another pill to swallow."

Clarkson, 29, drops her fifth studio album in October.