The dangers of happiness

From Slate "A study suggests extreme happiness may be bad for you...Extremely happy people 'earned significantly less money' and earned lower school grades than moderately happy people... Theories: 1) Happiness makes you complacent and kills your drive. 2) It makes you slow to adapt..."

This finding could be very bad for our economy. I suspect that we will soon have happiness pills that work far more effectively than drugs such as Prozac. We may soon be able to choose our happiness level and, I suspect, most of us will choose to be extremely happy. If such high happiness saps our desire to achieve then our economy will suffer.