The Prayer to the Sacred Heart of Jesus.

The Sacred Heart of the Lord Jesus Christ

"Lord Jesus, 

let my heart never rest until it finds You, 

who are its center, its love, and its happiness. 

By the wound in Your heart 

pardon the sins that I have committed

whether out of malice or out of evil desires. Place my weak heart in Your own divine Heart,

continually under Your protection and guidance, so that I may persevere in doing good and in fleeing evil until my last breath. 

Amen. "

- Saint Margaret Mary Alacoque.

Source: http://www.rc.net/sanjose/shrnolp/cttihoj.htm