I have lived long and known the Lord enough to see clearly what life is all about. When you are young, you only see what you wish to achieve in your life. In other words, you see yourself as the master in control of your own destiny. What you do not always see is that you were born into a mostly secular, sinful world which can easily influence and shape you wrongly. As you age, you begin to see this danger and start to seek God or if you had somewhat known him earlier, to deepen your faith. My advice is to be aware of the existence of evil and start seeking the God of Christ when you are still young. If you play God too long, you may lose him forever.