I'd recommend The Happiness Advantage. Really changed my outlook on life for the positive. Author also did a TED talk on the subject called "The Happy Secret T

I'd recommend The Happiness Advantage. Really changed my outlook on life for the positive. Author also did a TED talk on the subject called "The Happy Secret To Better Work". http://www.ted.com/talks/shawn_achor_the_happy_secret_to_better_work?language=en http://www.ted.com/talks/shawn_achor_the_happy_secret_to_bet... http://www.amazon.com/The-Happiness-Advantage-Principles-Performance/dp/B00435DZ7S http://www.amazon.com/The-Happiness-Advantage-Principles-Per...