stick to one's guns

Idioms and Phrases

Hold fast to a statement, opinion, or course of action, as in The witness stuck to her guns about the exact time she was there . This expression, originally put as stand to one's guns , alluded to a gunner remaining by his post. Its figurative use dates from the mid-1800s.

Example Sentences

It’s one thing to stick to one’s guns.

From Washington Post