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
Wiebe	VEE-bə (Dutch, German), WEE-bə (Dutch)	Frisian, Dutch, German
Jaye	JAY	English
Zephania	-	Southern African
Nikita (1)	nee-KEE-tah (Russian)	Russian, Ukrainian, Belarusian
Canaan	-	Biblical
Madelina	-	English (Rare)