Flourishing is tied to a condition, and the condition is fidelity to a structure larger than your preferences. A person prospers by taking heed, by ordering his conduct according to principles he did not invent and cannot bend to suit the moment. Freedom to do whatever you want is not the path; alignment with what is right is.
The charge against dread comes right beside the charge to obey, and the pairing is not accidental. Courage and discipline hold each other up. A man who honors the law he has been given has firm ground to stand on, and firm ground is what keeps fear from mastering him. Build your life on principle, and you stop being dismayed by every storm.