Most of us fear rejection. We don't like to take a risk and then be summarily dismissed. It can be an intimidating prospect to be rejected for a job, a date, or an opportunity. It's much more painful if we feel that action is directed specifically at our identity.
John Powell wrote in his book, Why I Am Afraid To Tell You Who I Am?, "I am afraid to tell you who I am, because, if I tell you who I am, you may not like who I am, and it's all that I have." We avoid personal honesty & transparency because that puts us at tremendous risk of injury if it isn't received well. While we might feel that constructing a facade to hide our true selves behind will keep us safe, it will also ensure the lack of real relationship & community. We won't ever be able to enjoy depth in our most personal relationships and will become increasingly isolated.
I'm not suggesting that we need to rent a billboard to advertise our true selves or spew all of it out via social media. Instead we make an intentional effort with a select few people to share who we really are. It's a risky endeavor, but one that brings depth in its rewards.
Nothing ventured, nothing gained.