It is only necessary to have courage, for strength without self-confidence is useless.
True courage is being afraid, and going ahead and doing your job anyhow, that's what courage is.
Success is not final, failure is not fatal: it is the courage to continue that counts.
The courage to be is the courage to accept oneself, in spite of being unacceptable.
COURAGE, COURAGE TO ACCEPT ONESELF
How few there are who have courage enough to own their faults, or resolution enough to mend them.
Courage is not simply one of the virtues, but the form of every virtue at the testing point.