How do you motivate yourself on a low day? Or after a long day when you think it’s too much effort?

Someone once said to me, imagine you are in a movie, a movie of a part of your life where you overcame hardships and won, now how do you want to look in front of the camera? Are you disappointed and do not continue? Or that a good image of you will be displayed, that you struggled and stuck to your goals and achieved them.(I am not a native speaker and I got help from Google Translate.)