set (one's) heart at rest

To calm one's worries or fears. I can always count on my mom to set my heart at rest when I'm wracked with anxiety. Bill was really worried about his grades until his report card finally came and set his heart at rest.

Common Names:

Name	Pronounced	Usage
Leon	LEE-awn (English), LE-awn (German, Polish)	English, German, Polish, Slovene, Croatian, Dutch, Ancient Greek
Grigor	-	Welsh, Bulgarian, Macedonian, Armenian
Mitrofan	mee-trah-FAHN	Russian
Carl	KAHRL (German, English)	German, Swedish, Norwegian, Danish, English
Brynhild	-	Norwegian, Norse Mythology
Jaquelyn	JAK-ə-lin	English (Rare)