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
Deonte	-	African American (Modern)
Genoveva	he-no-VE-vah (Spanish), zhə-noo-VE-və (Portuguese)	Spanish, Portuguese
Ormonde	-	English (Rare)
Aaron	AR-ən (English), ER-ən (English)	English, Jewish, Biblical, Biblical Latin, Biblical Greek
Merlin	MUR-lin (English)	Arthurian Romance, English
Aaren	AR-ən, ER-ən	English (Rare)