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.