Many situations in life that happen to us are out of our control. However, we can choose to react to them or not. Our reactions give us power. It is up to us to remember we have the power to be happy. Some days will be better than others, but we control when the switch is turned on.
"Happiness can be found even in the darkest of times, if one only remembers to turn on the light." — Albus Dumbledore