The brain and the balancing act of life

In life we're usually juggling quite a few things. There are a lot of variables, and keeping tabs on them, while optimizing all of the equations of life, some of them at odds with each other, can take a lot of energy.

Above it all, we try to arrive at happiness, joy, well being. It would be interesting to study the myriad of things that go on in the brain to perform the blancing act of life.