I really like this quote !
As Shawn Achor said in one of his TED conferences, 10% of our life could be predicted by our external world and the other 90% by our internal world, It’s up to us how we manage it and where we put our focus. I really recommend to you that you watch this conference: http://www.ted.com/talks/shawn_achor_the_happy_secret_to_better_work.html
