Snap out of it
Meaning
Recover quickly from a bad state of mind.
Usage
Used to urge someone to regain composure.
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.
Command to quickly change mental state.
Popular in colloquial speech of the 20th century.