How do you catch your heart?

He spoke gently during his sermon, so beautifully, that I listened to him, instead of playing on the pew. What I clearly recalled was the confusion I had in my mind when he said which was something to this effect: So I am telling you to try to catch our heart. Learn to be able to catch your heart. 

That message stuck in my mind all throughout my growing years. What does he mean by catching my heart? It is inside my chest. Why will I catch it?