The most important advice I can offer is to be careful about following someone else’s advice.
I tell people that in a sense each of us is a storyteller. How we act, what we say and how we say it, how we dress, how we treat people, how professional (or non-professional) we act, and on and on, each represent a part of the story we tell everyone around us about ourselves. It is critical that your story be true to what you are, not what someone else is. If you try to be someone else, generally (unless you are an experienced politician) your story will ring false and not be of value.