There are two sure ways to fail: never get started and quit before you succeed. Many companies promote the language of risk-taking and innovation but are so concerned with short term profit goals that their culture discourages innovation (trying new things) and abandons promising projects too soon. It shouldn't require exceptional moral courage to try new things and stick with them.
There's some wisdom and no moral deficiency to one who holds courage in reserve and uses it as a last resort. Before we take the kind of risks that require courage, we ought to exhaust other less risky alternatives.