I will go to the king, which is against the law; and if I perish, I perish!
When your course is righteous, your courage will be reinforced. Esther had the righteous cause. She was to stand before the king and plead for the life of her people. Was she afraid? Undoubtedly.
Courage is not the absence of fear. Courage is persevering in spite of the fear. Courage doesn’t mean being oblivious to danger. People who wait for all the courage they need before they act will never act. But those who take the first little step in the process of courageous activity will be given greater strength by God.
The challenges of life will not get much bigger. But building your faith in God can grow you into a giant able to be courageous in any crisis. We build our faith by doing the things that seem hard to us at the time so that we can gain strength to do the really hard things that come to us in the future.
 Jeremiah, D. (2002). Sanctuary: finding moments of refuge in the presence of God (p. 297). Nashville, TN: Integrity Publishers.