Growing Up - Marks of Maturity

Php. 3:12-15 Not that I have already attained, or am already perfected; but I press on, that I may lay hold of that for which Christ Jesus has also laid hold of me.
13 Brethren, I do not count myself to have apprehended; but one thing I do, forgetting those things which are behind and reaching forward to those things which are ahead,
14 I press toward the goal for the prize of the upward call of God in Christ Jesus.
15 Therefore let us, as many as are mature, have this mind; and if in anything you think otherwise, God will reveal even this to you.