1627  Man needs his difficulties because they are necessary to enjoy success,
1990  There is nothing that wastes the body like worry, and the one who has any faith in GOD should be ashamed to worry about anything.....
2976  “People are just as happy as they make up their minds to be.”
697  To succeed in your mission, you must have single-minded devotion to your goal.
535  Man needs his difficulties because they are necessary to enjoy success.