Stoicism
stoicism (n.) – the practice of being unaffected by misfortune. A stoic will recognize that mishaps will inevitably occur so he is constantly ready and open to experiencing them. Unlike pessimists, stoics expect bad things to happen only because they recognize that this is the nature of reality.
They understand that everything in life is a cycle– good cannot exist without the bad. Ups without downs. Good or bad, up or down, yin or yang, stoics see all experiences as learning experiences.