Be Thou my Vision, O Lord of my heart;
Naught be all else to me, save that Thou art
Thou my best Thought, by day or by night,
Waking or sleeping, Thy presence my light.

This hymn will definitely help you have JESUS on your heart all day long! This is the first stanza and the melody are so beautiful. If you’ve never heard it before I encourage you to listen to it here.