“Frankness is a very subtle form of informality and can often make you loose the worth of your words, that’s where you should use authority of formality.”

PS: Never use that authority against your friends or don’t make such friends where you have to weigh your words before speaking them. You are natural and you are terrific, those who realize your worth will always discover your positive side through your intent and those you hate you will find a fault doesn’t matter what you say.