The concept of a "genuine self" based on outward behavior is fascinating to me. It's well-known that nearly every person acts different depending on the situation, except that it varies on how conscious or targeted the modifications are. When I was young, I often didn't realize what I was doing, but now almost all of my behavior towards people is calculated to some extent, with my work persona being the extreme opposite of my natural mode. I am "hail, fellow, well met" but vague with my neighbors. I completely ignore strangers unless they initiate contact. If I dislike someone, I am lower key combative and dismissive to encourage less direct interaction. Looking at how I treat anybody, I can find a reason behind it, and this used to cause discomfort, but I've come to peace with this chameleon, disingenuous aspect of my personality, whether rightly or wrongly, since the skill is far too valuable and I don't feel like changing.
Besides, all that my being completely honest would accomplish is making those I encounter feel utterly wretched about themselves and land me with a ton of enemies, which is definitely not in my best interest. The saying, "I'm just being honest" is synonymous in my mind with, "I'm just a jerk, but want to justify it and not have anyone get mad at me about it." XD