"To thine own self be true."
If we aren't true to ourselves, we cannot be true to anyone else, because we will not be our best. Speak your heart and express your feelings. You have control over all of your behavior, and it is much easier to do so when the air is clear and you have nothing weighing on your heart.
To speak of health, happiness and prosperity to every person that you meet.
To make all your friends aware of the special qualities within them.
To look at the sunny side of everything and let your optimism work to make your dreams come true.
To think, work for, and expect only the best.
To be just as enthusiastic about the success of others as you are about your own.
To forget past mistakes and press on towards a greater future.
To wear a cheerful countenance at all times, as a smile radiates warmth and love.
To give so much time to the improvement of yourself that you have no time left to criticize others.
To be far too wise for worry, too tolerant for anger, and too courageous for fear.
To be happy.