My daughter just turned seven.  She loves life. Whether it's splashing in a fountain, painting her latest masterpiece, or reading for hours alone in her room, she throws herself 100% into what she is doing.
She overflows with joy.
Most of us were like this as kids. Full of energy. Curious. Enthusiastic. Happy.
But somewhere along the way we lose our excitement for life. Whether by neglect or because of outside pressure, we start playing it safe.  We give up on our dreams.