I watched The King's Speech recently, and there is one line I really like from the movie.
The King is angry with his speech pathologist and begins to rant at him while the pathologist disengages and talks back at the King asking, "Why...why should I listen to you?" At which the King finally spits out:

"Beacause I HAVE A VOICE!"

The speech pathologist slowly gets up from where he was sitting, and acknowledges this statement with a nod.

There are many times I have questioned myself why indeed anyone should listen to what I have to say. I struggle with fears and insecurities.
But this line from the movie reminds me of something. I am royalty. I am a daughter of The King. And I am commanded to speak His truth.