" The most successful endurance athletes over the age of 40 are so similar in personality it’s almost uncanny. What we see in all of these men and women is a limitless passion for sport and for the athletic lifestyle that stems from a positive, life-embracing personality (i.e., a non-neurotic, open, extraverted, conscientious style of coping with life). A "

― Matt Fitzgerald , How Bad Do You Want It?: Mastering the Psychology of Mind Over Muscle