Being raised in an unstable household makes you understand that the world doesn’t exist to accommodate you, which is something a lot of people struggle to understand well into their adulthood. It makes you realize how quickly a situation can shift, how danger really is everywhere. But crises when they occur, do not catch you off guard; you have never believed you lived under a shelter of some essential benevolence. And an unstable childhood makes you appreciate calmness and not crave excitement.
The decision to be positive is not one that disregards or belittles sadness that exists. It is rather a conscious choice to focus on the good and to cultivate happiness - genuine happiness. Happiness is not a limited resource. When we devote our energy and time to trivial matters and choose to stress over things that ultimately are insignificant, from that point, we perpetuate our own sadness and lose sight of the things that really make us happy and rationalize our way out of doing amazing things.