OK, so you have flaws. That is not the main thing about you, it's only the thing that makes you unique in all the world.
Diamonds are made from intense pressure. That means that all the hard times you've had in your life only make you all the more precious.
Life provides the pressure, you get to create the shape and shine.
So shine. Shine quietly or shine out loud, what ever your style, you are a precious gem and you do light up this world.