I almost resent that Avril said it best...

...but she did. Minus a ridiculous chorus, which I removed, this is "Innocence", and it's how I feel.

Waking up I see that everything is ok
The first time in my life and now it's so great
Slowing down I look around and I am so amazed
I think about the little things that make life great
I wouldn't change a thing about it
This is the best feeling

I found a place so safe, not a single tear
The first time in my life and now it's so clear
Feel calm, I belong, I'm so happy here
It's so strong and now I let myself be sincere
I wouldn't change a thing about it
This is the best feeling

It's the state of bliss you think you're dreaming
It's the happiness inside that you're feeling
It's so beautiful it makes you wanna cry