"Our Homo sapiens ancestors had to survive sabre-toothed tigers and mastodons the size of small houses. Their brains constantly scanned for what might be wrong, and now ours do too.
"But neuroscientists are discovering that a technique called 'mindfulness' can rewire our gloomy brains for less stress and more happiness." by Leslie Timmins, MFA......September 2011 edition of Alive magazine.
Kind of makes sense when you think about it. It is good to know that the wiring of the brain can change with a little bit of work.