I'm not afraid of anything

So there is this song that I absolutely love to listen to, and to sing. It's from the show "Songs for a New World" by Jason Robert Brown. I connect so well to this song. I'm not sure why; I can't think of a specific line (aside from "I'm not afraid of anything") that really speaks to me. I think its just the song and message as a whole. When I first heard it and sang it, my body actually had a physical response. When that happens, its more than just simple taste that is involved in liking the song. The same response happened when I heard/sang "Come thou Fount". Now, I know the phrase a "physical response" sounds so kinky, but I don't mean it in any perverse way. How many times have you heard something, and it just resinates with your WHOLE body? Maybe its an artsy thing. But whatever it is, its passion, and I feel it often for many different things. Here are the lyrics to that song: look it up if you have a chance.

Jenny's afraid of water
I mean she swims so well
But still
She's afraid of water
And so she won't go near the sea
Not me

Katie's afraid of darkness
I mean she sleeps and all
But still
She's afraid of darkness
So when the lights are out she has to hold my hand
I don't understand

I'm not afraid of anything
Be it mountains, water, dragons, dark or sky
I'm not afraid of anything
Tell me where's the challenge if you never try
So watch me fly
I'm not afraid

Daddy's afraid of babies
I mean he got through me, but now
He's afraid of babies
Guess he's scared of what they'll be
Not me

And Mama's afraid of crying
You know she tries to hold it in
But she's afraid of crying
And she can look at me with tears stuck in her eye
And I don't know why

I'm not afraid of anything
Be it growing old or going out of style
I'm not afraid of anything
Who would give up what they want without a trial
Another mile
I'm not afraid

And I feel the calling of adventure
And I hear the ringing in my ear
The lights are glaring
Trumpets blaring
I'm right here
And I hear the calling of tomorrow
And I feel the stirring in my bones
And David loves me
He's afraid to hold me

Listen to the calling of excitement
Can you feel the pounding of my heart
The lights are ready
Pulse is steady
I can start

Never stop the calling of a challenge
Blessing on the water and the stones
And David loves me
He's afraid to tell me
David loves me
He's afraid to trust me
He's afraid to hold me
And he'll always be
He's afraid of me

And I'm not afraid of anyone
I am sure to win with anyone at all
I'm not afraid of anyone
Not a soul alive can get behind this wall
So let them call
And watch them fall
�Cause after all
I'm not afraid