My grandfather was deeply influenced by Mahatma Gandhi. And he used to always say, that if the work is worth doing, उचित, good for society, समाज के हित में, then proceed, even in the face of adversity and seemingly insurmountable odds. And you would be then helped in the same manner as Gandhi describes.
He said that was the leap of faith that was required.
I saw this at work, when I worked with him.