Anxiety Builds Courage
From the perspective of courage, every time you experience fear you have another opportunity to increase your level of courage.
With some situations, the very fact that your initial reaction is one of fear, in itself renders the words you say and the actions you take into courageous words and deeds. If you would be doing the very same thing and it would be easy for you, it would not be a courage-building event.
Now that you needed to overcome your anxiety and fear, your level of courage is rising. This opens you up to a wealth of future possibilities that would not have been possible without the courage you are adding to your character.