If evil be spoken of you and it be true, correct yourself, if it be a lie, laugh at it.---Epictetus
We are not what other people say we are. We are who, we say we are.
We determine this not only by what we say, but how we act. If our actions meet the criteria for high moral principles, we are not bound by other people's faulty perceptions.
But....if we are getting feedback that can be verified as true by more than one reputable and validating source, it is up to us to make corrections that will ensure we are living up to the highest principles that we have set for ourselves.
It is not a sin to be wrong. It is a sin to choose to remain wrong, long after it has been proven to be so.