The church is full of children attempting to think and act like adults. They are dumb but happy. Grace, simply put, is God's provision for our spiritual needs. Grace also connotes that God gives with no strings attached. Grace means we orient to what God does for us, not what we do for him.
Many people stay in the crib of the Christian life for nearly all their Christian experience.
A person can live the Spirit-filled life and may persist in immaturity. Spirituality is not the same as maturity. Growth in the Christian life is a process from babyhood, to adolescence to maturity. At maturity an orientation to the upward-call takes effect. Occasionally he may think of the upward-call.