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
Allard	['æləd]
Klazina	klah-ZEE-nah	Dutch
Link	[liŋk]
Callisto (2)	kə-LIS-to (English)	Greek Mythology (Latinized)
Aloys	[ə'lɔis]
Erwin	ER-veen (German), ER-win (Dutch), ER-vin (Dutch)	German, Dutch, Ancient Germanic