stick to your guns不听别人劝告；坚持己见；一意孤行

【例句】
In the first case, you need to stick to your guns.
在第一种情况下，你应该要坚持己见。

Despite harsh criticism, she's sticking to her guns on this issue.
尽管倍受诟病，她在这件事上仍旧坚持自己的立场。