do (one's) heart good
To please one, especially by placing them in a more positive mental or emotional state; to ease one's mind. Spending time outdoors just does my heart good. Can you please reconcile with your sister? It would do my heart good to know that you two aren't fighting anymore.
do someone's heart good
Fig. to make someone feel good emotionally. It does my heart good to hear you two are back together. When she sent me a get-well card, it really did my heart good.
do (one's) heart good
To lift one's spirits; make one happy.
do one's heart good, to
To cheer or be cheered up, to make someone feel good, to gratify. A cliché since the nineteenth century, it was known in the sixteenth century, and appeared in Shakespeare’s A Midsummer Night’s Dream (1.2): “I will roare that I will doe any man’s heart good to heare me.” See also warm the cockles of one's heart.