come to (your) senses

to start to understand that you have been behaving in a stupid way.

Once Jack came to his senses, he was happy to admit that he'd been wrong.

• your alma mater
• your ass off
• your best bib and tucker
• your blood run cold
• your brains out
• your bread and butter
• You're a fine one to talk!
• You reap what you sow.
• your ears must be burning
• You're breaking my heart!
• You're in there!
• You're joking!
• your elders and betters
• You're telling me!
• you're welcome
• your eyes pop out of head
• your eyes pop out of your head
• your feet on the ground
• your finger on the pulse
• your finger on the pulse of
• your finger on the pulse of something
• your glad rags
• your goods and chattels
• Your guess is as good as mine.
• your guess is as good as mine