Do not be anxious about tomorrow, for tomorrow will be anxious for itself. Let the days own trouble be sufficient for the day. – Bible
It is not work that kills men; it is worry. Work is healthy; you can hardly put more upon a man than he can bear. Worry is the rust upon the blade. It is not the revolution which destroys the machinery but the friction. Fear secretes acids; but love and trust are sweet juices – Henry Ward Beecher