They seem to have come to believe they possessed these powers in themselves. He's urging them to surrender themselves to God and to rely on His power. But maybe you've attributed your success to yourself, when if you'd done exactly the same things in the same way and God had not blessed them, you would not have succeeded. Be consistent in prayer, in dependence on God. Remember, we need to be aware of our dependence on God's blessings.
Regular prayer is important.
Whether and when you choose to pray indicates something about your confidences. Consider, think about this. Revel in your dependence on God. Invite His power into your life. The boy evidences a terrible condition.