get up (one's) nerve (to do something)

To muster or draw upon one's courage or resolve to do something. I wanted to ask Mary Sue to the prom, but I never got up the nerve. I hope Jonathan finally gets up his nerve to ask his boss for a raise.

Common Names:

Name	Pronounced	Usage
Doris	DAWR-is (English), DO-ris (German)	English, German, Croatian, Ancient Greek, Greek Mythology
Kasper	KAHS-per (Polish, Swedish), KAHS-pər (Dutch)	Polish, Dutch, Swedish, Norwegian, Danish
Viraj	-	Indian, Marathi, Gujarati
Damianos	-	Ancient Greek
Morcant	-	Ancient Celtic
Juliet	JOO-lee-et, JOOL-yət	English