Joyfulness keeps the heart and face young.
Achievement is not always success, while reputed failure often is. It is honest endeavor, persistent effort to do the best possible under any and all circumstances.
No man fails who does his best.
There is no medicine like hope.
Put yourself in your customer's place.
A constant struggle, a ceaseless battle to bring success from inhospitable surroundings, is the price of all great achievements.