Simple....
A few good ways to talk about yourself--->>>
To mention a few things...you could talk about your personality, your hobbies, what kind of a person you are (charismatic, intriguing), what you love to eat, your family, just you in general; don't be shy...it's you you're talking about, and you know yourself more than anyone else!
Thus, your answer.
Various Communication sources, i'm not really certain i'm tired but Credibility refers to a person's perception of the truth of a piece of information
You never lose sight of your thesis, main idea, and the message you're trying to convey to the reader.
