The phrase "inner compass" refers to a person's intuition, values, and instincts that guide them in making choices and decisions. It is like an inner voice or sense that helps us determine what feels right or wrong in a situation. Full definition
If you're trying to replicate the work and results of other people, what does that say about your own inner compass? (cnbc.com)
Once a feral child, loose on the city streets, she is now a New York City policewoman, and not much changed — a tall young woman with green gunslinger eyes and a ferocious inner compass of right and wrong. (bookbrowse.com)
Our consciences are not infallible; but they are the only inner compass that we have. (nakedpastor.com)