have a mind of one’s own—have an independent opinion:
- The real offence, as she ultimately perceived, was her having a mind of her own at all. Her mind was to be his—attached to his own like a small garden-plot…
know one’s own mind—know what one prefers or wants:
- Babette seemed to be one of those poor creatures that always hang on the words of someone else, not knowing her own mind, being fearful of failure.