To me this song sounds like he is telling someone to realize they can overcome their problems ( are you half empty? why don't you fill up?)
And to remember that you don't always know what you're capable of (nothing silhouettes till the lights come on, so come on)
To me this song sounds like he is telling someone to realize they can overcome their problems ( are you half empty? why don't you fill up?) And to remember that you don't always know what you're capable of (nothing silhouettes till the lights come on, so come on)