What does it really mean to be honest? 

Many people think that being honest just involve telling the truth when you do something wrong. But honesty it's more than the quality of being truthful. Being honest also means being truthful with yourself so you can be sincere with others. Have you ever thought how it's the life about those ones who doesn't live honestly with themselves? Living life honestly means opening oneself freely and exposing one's true self to others. And how could someone can do that if they aren't really honest with themselves and most of the time they pretend they're someone else.
Oscar Wide "Be yourself; everyone else is already taken."
Remeber to be honest so people can consider you trustworthy.