A positive attitude is largely a matter of feeling you have control over your life, says Robin Barr, Ph.D., of the NIA’s Adult Psychological Development Program. He points to studies of men in nursing homes who stay healthier and live longer solely by virtue of, for example, being free to find their own way to the lunchroom rather than being taken there.
“In the end, aging is a way of thinking,” says Dr. Douglas. “In the past, we’ve thought that a person was old at age 65. It just isn’t the case at all.”