Wanting to be perceived as "authentic" comes up in some of my coaching as well, and I find that when women struggle with how to display their true, authentic self it often does comes down to a lack of confidence. Just because a woman is in a male-dominated work environment, doesn't mean she has to morph to fit into it or to be accepted.  A woman who is true to herself and intentionally seeks to be authentic, real and committed to the vision of the company will often times bring new and diverse ideas to the table. In fact, in my coaching experience women often feel like a weight is lifted off their shoulders when they understand that bringing their values and confidence to work are for the most part much needed and well received. Authentic, committed women who might not always fit the mold do, in the end, benefit their organizations greatly.