" Intentionality. To cultivate a positive attitude is to take a large step on the path of mastery in relationships. In addition, mental toughness (the ability to focus on a problem or a long-term goal) combined with openness and imagination (the ability to see options and visualize desired states) can be applied to relationships as well as to sports, or anything else. "

― George Leonard , Mastery: The Keys to Success and Long-Term Fulfillment