I'm not saying that ambition is the only road to happiness. I think you're correct - more highly ambitious people probably do have a far more difficult time be

I'm not saying that ambition is the only road to happiness. I think you're correct - more highly ambitious people probably do have a far more difficult time being 'happy'. I am trying to imply that the pursuit of happiness can make people work harder. For the ambitious - it's often used as a metaphorical carrot on a stick.