Self-Assuredness of Childhood

I miss the little girl who learned how to play by herself. outside of school she was almost always alone, but never lonely. She was perfectly joyous playing in an empty playground with just her mother to laugh with. She was so full of life and imagination she could play in her room by herself for the whole day and tire herself out. She would turn the color lights on with her toy she placed on the ceiling fan and have a party alone. She never had a second thought. I live in the same body she did. Where has that life gone? I am pressed to find it.