PDF of Secrets of the World Class: http://team-hero.net/wp-content/uploads/2016/06/177%20Mental%20Toughness%20Secrets%20of%20the%20World%20Class%20-%20Steve%20Siebold.pdf WOOP talk by Gabrielle Oettingen: https://www.youtube.com/watch?v=7mobxikaYgU