Courage.

The quality of mind or spirit that enables a person to face difficulty, danger, pain, etc., without fear; bravery.

Obsolete . the heart as the source of emotion
Have the courage of one's convictions, to act in accordancewith one's beliefs, especially in spite of criticism.

Courage does not always roar. Sometimes it is the quiet voice at the end of the day saying, I will try again tomorrow.