pull up (one's) socks

To make a redoubled effort; to make a sincere attempt to improve. After that abysmal grade on my midterm exam, I'm going to have to really pull up my socks if I want to pass math this year. John, if you don't start pulling up your socks, we're going to have to give your job to someone else.

Common Names:

Name	Pronounced	Usage
Vonda	-	English
Alojzija	-	Slovene, Croatian
Jagna	YAHG-nah	Polish
Cassandra	kə-SAN-drə (English), kə-SAHN-drə (English), kahs-SAHN-drah (Italian)	English, Spanish, Portuguese, Italian, French, German, Greek Mythology (Latinized)
Calum	KAL-um	Scottish
Yorick	YAWR-ik (English), YAW-rik (Dutch), YO-rik (Dutch)	Literature, English, Dutch