You don't develop courage by being happy in your relationships everyday. You develop it by surviving difficult times and challenging adversity.
EpicurusWhen someone admits one and rejects another which is equally in accordance with the appearances, it is clear that he has quitted all physical explanation and descended into myth.
EpicurusThe flesh believes that pleasure is limitless and that it requires unlimited time; but the mind, understanding the end and limit of the flesh and ridding itself of fears of the future, secures a complete life and has no longer any need for unlimited time.
Epicurus