RichThesaurus
lose one's nerve
vs
screw one's courage to the sticking place
lose one's nerve
verb
To stop doing or fail to do something because one lacks courage.
screw one's courage to the sticking place
How often have the words
lose one's nerve
and
screw one's courage to the sticking place
occurred in a corpus of books?
(source:
Google Ngram Viewer
)