3-2-1: Being great today, what to do when things don't go well, and favorite type of mental toughness
HBR's 10 Must Reads on Mental Toughness
Harvard Business Review, Martin E.P. Seligman, Tony Schwartz, Warren G. Bennis, Robert J. Thomas
amazon.com
Have faith: whatever the goal, the universe will provide lessons. Those lessons will either contain the growth to make you strong enough to accomplish the goal, or the wisdom to see a better goal.