American dream.

"It's hard to find an American who doesn't believe that, with enough will, he or she can achieve anything - we've been brought up to believe that."

"After all, if America as an idea has meant anything, it has meant just that - the possibility of continual transformation - becoming wealthier, more spiritual, more beautiful, happier and feeling younger."

But "There are real limits to what can be done to reverse the damage caused by a lifetime of unhealthy living."