I can't recommend this often enough: Check out "The emotional life of your brain" by Richard Davidson and Sharon Begley. It is applied neuro-science. A refine

I can't recommend this often enough: Check out "The emotional life of your brain" by Richard Davidson and Sharon Begley. It is applied neuro-science. A refined version of the "big five" character traits along with scientifically verified explanations where they originate in the brain and how to change them.