One important aspect of living authentically is living in truth. From the standpoint of relationship, this means not living in state of denial about the conditions that surround a relationship. It also means not passively accepting the negative aspects of the overall circumstances that surround us. With regard to friendships in particular it means not holding space for those aspects of others' personalities and social comportment that are either toxic to us directly, or just negativity that we would be better served to avoid.
I thought this article was really interesting. I love his statement that one important aspect of living authentically is living in truth. I have often said that the most powerful lies we tell are the ones that we tell ourselves. Read this article and enjoy.