If we should be learning anything from the Susan Boyle meltdown phenomenon, in the wake of her inpatient treatment for “exhaustion” a mere weeks after coming to prominence, it’s that the average person isn’t cut out for fame. The same holds true for political leaders. What precisely makes one person succeed while another cracks? Susan Boyle lived a quiet, simple country life alongside companions of the mainly feline persuasion, until she was thrust into the spotlight on Britain’s Got Talent and instantly became the focus of fantasy projections by every single fat slob splayed out on the couch with a...