You may know how to describe your personality better than you know how others experience it.

You have a description of yourself and other people have an experience of you, and they are different objects. Your account is built from intentions, and theirs from effects, which is why someone can find you abrupt while you know you were being efficient. Both are honest reports about different things.

Ask one person you trust what it is like to be on the other side of you in a specific situation. Ask about effect, not about character. The answer is usually more useful and less alarming than the question feels.