Listen! God, Himself says, 'Call upon Me in the time of trouble so that I will hear thee and thou will praise Me'. Afflictions confirm us in our faith, and teach us to set worldly glory at naught. Believe firmly that no suffering or sorrow can visit us --- not a hair of our heads can fall --- with out God intending it. Although we are always inclined to put down our misfortunes to the ill will or stupidity of other men, these are in reality, only tools in the hand of God; tools used to fashion our salvation. Therefore take heart and pray to our Lord Who is always at work for our salvation, using to this end both what we call happiness and what we call sorrow.
But the adult is not the highest stage of development. The end of the cycle is that of the independent, clear-minded, all-seeing Child. That is the level known as wisdom. When the Tao te Ching and other wise books say things like, "Return to the beginning; become a child again" that's what they are referring to. Why do the enlightened seem filled with light and happiness like children? Why do they sometimes even look and talk like children? Because they are. The wise are Children Who Know. Their minds have been emptied of the countless minute somethings of small learning and filled with the great wisdom of the Great Nothing, the Way of the Universe.
You're the only one who knows when you're using things to protect yourself and keep your ego together and when you're opening and letting things fall apart, letting the world come as it is - working with it rather than struggling against it. You're the only one who knows.