set one's heart on

"Mother, it must always be the last chance—the only chance, when one has set one's heart on it."

Two beautiful eyes looking upon you and seeming to say: 'March upon the enemy!' are enough to set one's heart on fire!

To be morally good is to know the good, to set one's heart on the true object of affection; and to be theoretically sound is to understand perfection.

It is not wise to set one’s heart on what one is not sure of getting—or on things that perish with the using—which is emphatically true of jackets.

"I was thinking that a very little can make folks happy, but that somehow or other that very little is as hard to get as if one set one's heart on a great deal."