Dealing with creative self-doubt: “I have nothing to say”

I’ve recently been reading Lisa Congdon’s Find Your Artistic Voice: The Essential Guide to Working Your Creative Magic. I particularly appreciated the section that explained how each person's story is unique:

“Your story is simply everything about you: what has happened to you, what interests you, what you are passionate for, what you find yourself wanting to read about, and what you find yourself thinking about as your mind wanders. It is also your struggles, your fears, your regrets, your hopes, your dreams, and your aspirations. Your story is your background, your identity, your culture, your ethnic or gender or sexual identity, the color of your skin, and how you’ve been treated by society, and privilege or lack of that you’ve experienced in your lifetime because of all of those factors.”

I think that, at some point, every creative has experienced the fear that their work is not compelling enough. However, given the above, do you still believe you have nothing to say? I sincerely hope you don't and that, after reading the passage, all of us will feel more confident expressing our unique voices and gifts.