Get a hold of yourself
Meaning
Calm down and compose yourself.
Usage
Used to steady someone who is panicking or upset.
Origin & History
Origins and dates here are approximate summaries. Many idioms have disputed or unknown origins, and not every date has been checked against a historical dictionary, so treat specific dates and stories as a starting point rather than a citation.
Self-control metaphor referencing physical grasp to steady behavior.
20th-century psychological vernacular.