Emotional maturity is ability to stick to a job and to struggle through until it is finished; to endure unpleasantness, discomfort, and frustration; to give more than is asked for or required; to size things up and make independent decisions; to work under authority and to cooperate with others; to defer to time, other persons, and to circumstances.
Maturity is achieved when a person accepts life as full of tension; when he does not torment himself with childish guilt feelings, but avoids tragic adult sins; when he postpones immediate pleasures for the sake of long-term values.... Our generation must be inspired to search for that maturity which will manifest itself in the qualities of tenacity, dependability, co-operativeness and the inner drive to work and sacrifice for a nobler future of mankind.
One does not surrender a life in an instant. That which is lifelong can only be surrendered in a lifetime. Nor is surrender to the will of God (per se) adequate to fullness of power in Christ. Maturity is the accomplishment of years, and I can only surrender to the will of God as I know what that will is.
there is no gateway to maturity; there is no line that is crossed. Maturity is like a maze, one path leading to another; it is like a great building full of corridors, one turning into another. Did anybody ever reach the end, so there was a clear way ahead, so he could say, now I am rich with knowledge, now I know all the answers?