Throughout life people will make you mad, disrespect you, treat you bad, lie to you, talk about you and mistake your confidence for cockiness-let them. You just have to realize these people do not want to hear the truth about you because they want to believe only what they want to believe. Look where you are at and heading, and then look where they are at, it doesn't matter what they think.Being self-reliant and self-assured are the only things that are gonna get you through all the challenges including nay-sayers. So when you hear lies about yourself, know you must be doing something right for someone to purposely focus and create something false about you. It means you're graduating somehow.
Just move on