Focus on Strength and Resilience:
* A rock in a raging storm: Standing firm despite overwhelming challenges.
* A steel beam in a high-rise building: Providing support and stability even under immense pressure.
* A phoenix rising from the ashes: Overcoming adversity and emerging stronger.
Focus on Determination and Action:
* A lion facing down its prey: Unwavering in the pursuit of a goal, even when facing danger.
* A ship navigating through treacherous waters: Steering a course despite obstacles and uncertainties.
* A mountain climber scaling a treacherous peak: Undeterred by the difficulties of the climb.
Focus on Inner Strength and Spirit:
* A burning ember in the darkness: Holding onto hope and light in difficult times.
* A lighthouse guiding ships to safety: Providing guidance and hope to others.
* A seed breaking through the soil: Overcoming limitations and growing towards something greater.
Focus on Facing Fear:
* A knight facing a dragon: Confronting fear head-on, even when it seems impossible.
* A soldier on the battlefield: Standing firm against danger and uncertainty.
* A dancer walking on a tightrope: Performing bravely despite the risk of falling.
The best metaphor for courage will depend on the specific context and the nuance you want to convey.