Theory of a happy brain

There are four independent brain circuits that influence our lasting well-being. The first is our ability to maintain positive states.
The second circuit is responsible for our ability to recover from negative states.
The third circuit, also independent but essential for the others, is our ability to focus.
The fourth and final circuit is our ability to be generous.

This is the research of a neuroscientist, Richard Davidson, and I find it fascinating. I read it in The Book of Joy and perhaps, after I have mulled over this, I will expand on what it really means to me.