It is a long road, for sure, but one we have all traveled at one time or another.
When you move and act like you are a secure person you will eventually start to believe it yourself. Once you start believing it you will no longer have to 'act' secure because you will believe that you are.
Getting those insecurities out into the light of day so they can be dealt with is a huge step. It means we are facing down our demons and relegating them to the outer reaches of space.