Positive Psychology - Is Negativity a Good Thing?

Negativity is more of our natural to fault state than positivity. That's what motivates people to do whatever stupid thing they learned how to do when they were a kid. We keep looking for fun, fun, fun or sense of accomplishment to distract us from that fear that our needs will not be met. When we don't have the happy chemicals, the dopamine, the serotonin, the oxytocin, masking the cortisol,. What does that state look like?