One isn't necessarily born with courage, but one is born with potential. Without courage, we cannot practice any other virtue with consistency. We can't be kind, true, merciful, generous, or honest.
Take off your bedroom slippers, put on your marching shoes. Shake it off. Stop complaining, stop grumbling, stop crying. We are going to press on. We’ve got work to do.
If you could say, with truth, to your own solitary heart, to-night, 'I have secured to myself the love and attachment, the gratitude or respect, of no human creature; I have won myself a tender place in no regard; I have done nothing good or serviceable to be remembered by!' your seventy-eight years would be seventy-eight heavy curses; would they not?