You have your optimists; these are the-glass-is-half-full people. You have your pessimists; these are the-glass-is-half-empty people.
There should be a third category: "non-imists." These are the glass-is-as-it-is people.
A recent USNews.com article directs our attention to a study published in the journal, Psychological Science, extolling the health benefits of optimism--according to the journal, optimists have stronger immune systems--and then offers 5 ways to become one.
As a devout non-imist, I would like to attempt, in reverse order, a point-by-point rebuttal of these 5 ways. Here goes.