screw up one's courage
to build up one's courage for something
I screwed up my courage and asked my supervisor to transfer me to a different department.
Greatest Fashion Models
Kate Moss became widely known for dating superstars such as Johnny Depp, Daniel Craig, and Pete Doherty, but in the meantime she was making a name for herself on the runways of the world and is widely considered one of the greatest supermodels to ever grace them.