Vedanta & Psychology- Inner child work

An integral contribution of Sri Pujyaswami Dayananda Saraswati is the inner child work. All the painful and unresolved emotions make the inner child, it is present in each and every one of us. This is the reason we suffer immense conflict, a split within ourselves which causes a lot of grief and strife. Who is this inner child? Why it is there? Is it possible to integrate the inner child with the adult? This topic is crucial that has to be discussed and understood by everybody so as to arrive at a place of resolution.