"I will shed all this skin down to the very bone beneath it if that's what it will take for you to come to the realization that appearance is not what makes a human beautiful" -  Christoper Poindexter.

Insecurity in people's mind makes them do things which they regret.There is no such thing as 'Overcoming Insecurity'. No one discuss about it, write books on how to do so or there are no documentries to overcome it.Its in the nature for human beings that at some point of their life they will feel insecure.   We can never overcome it but we can control the actions it makes us do.