Where does courage fit in the model?

I’ve been thinking about courage lately and am thinking of it as both a feeling and an action (it’s all about feeling/facing fear and acting anyway). If it’s true that positive results can never from from negative feelings, where does courage fit? How can it work when it’s driven by a negative emotion? Is it a way of mixing models that just works? Or are we acting our way out of negative feelings when we’re courageous?