There is a common misperception that confidence is arrogance, happiness is ignorance, and kindness is being fake.
I challenge this idea. I feel lack of confidence leads to bitterness and resentment that leads to unhappiness. Unhappiness leads to a lack of faith in other human beings and this leads us to treat them unkindly.
Not opening yourself to the judgments of others and hanging on to that moment just after you accomplish something and only you have seen it. The great joy you feel is the only real feeling. Its untainted and pure.
Only expose to the world what you have enough strength and faith in to withstand the waves of cruelty and criticism. When you do experience this negativity you know what parts of your life are rotten and need to be removed.
As you remove the negativity you will find you can expose more and more of your beautiful nature and this will result in being more true to your self.