As you will discover when reading this book. The inner chid is steeped in traditions and human culture long before the birth of psychology.
There has always been an acknowledgment that there is something from our childhood that can hinder us is not healed and how many adults suffer because of childhood trauma or childhood insecurity.
If you don't connect with the inner child and heal those wounds, you can grow old too quickly, hurt unnecessarily and stop yourself from living the life of joy you desire.
Go back to a time of innocence and simplicity.