I really like this quote, but I don't think this would truly take just one day. You'll have to fight for much longer, survive for much longer, persevere for much longer. And the truth is some of us won't get there. The world is too unforgiving for that. However, I do believe that even if we never reach a position where we can stop caring, friends and family will be the comfort you need.
The best response to a narc is no response! If you must respond, show no emotion... This can be very difficult, but it will deprive him of what he wants most... A narcissistic payoff from your reaction/response.