Candor, Character or Confidence...which is most important for a person display in relationships? Why?

Candor, Character more than Confidence. I can teach confidence, the other two I've found to be most reliable when they are innate to the person.

Character is the cornerstone.

I would normally say that a solid character is the most valuable asset a person can have. But out of compassion, I discovered that between enforcing rules or nurturing relationships, it's best to think "relationship before rules." (Do not apply in war. In war, it's always mission first.)

"If you reward candor, you'll get it." Jack Welch

“Be more concerned with your character than your reputation, because your character is what you really are, while your reputation is merely what others think you are.”
John Wooden

Character

character

Character, as it is an internal depiction of how one will guide themselves in situations that are challenging and cannot be faked. If one has questionable character, it will display it's self at some point. One of the reasons the Army focused on professionalism and more specifically character recently.