To put it briefly, the moment you pick up an attachment, the functioning of this lovely apparatus called the human heart is destroyed. If you want to repair your radio, you must study radio mechanics. If you want to reform your heart, you must give serious, prolonged thought to four liberating truths. But first choose some attachment that troubles you, something that you are clinging to, or something that you dread, or something you are craving for, and keep this attachment in mind as you listen to these truths.