Honesty, not in your conduct, rather choosing to surround yourself with honest people.

People with whom you can share what you are truly feeling.
People with whom you can share your truths about them – because you know they will be respected.
People with whom you can share your truths about yourself – because you know you will be seen and heard.

Only brutally honest people can choose to surround themselves with honest people. Otherwise, we are simply masking our own selves.