Children simply trust and rely on their parents. They regard their parents as the highest authority and suppose them always right so they are simply obedient to their parents. God is our Father in Heaven and He is truly the utmost and righteous one. We should rely totally on Him and simply obedient to Him. 

Children are pure and simple. They live in the guide of their hearts, while adults their interests. To increase myself to go back to the style of a child, I will pray to the Lord and ask for it. Meanwhile, I must train myself by recollecting my heart while in childhood and observing children around and feeling their hearts. In short, I must learn from children.