Screw up your courage - Idioms by The Free Dictionary
screw up your courage
screw up (one's) courage
To emotionally prepare oneself to do a frightening or overwhelming task. I'm really nervous about asking Sarah out on a date, but I just need to screw up my courage and go through with it.
screw up your courage summon up all your courage; force yourself to be brave.
References in periodicals archive
b) You screw up your courage
, propel yourself toward the food court, and yell, "Hi, Jack
OK, it's time to screw up your courage
and dust off your sense of adventure as Raging Waters in San Dimas and the San Diego Wild Animal Park introduce their newest water and wildlife attractions just in time for summer.