In his Creed for Optimists, Christian Larsen tells us...

Be so strong that nothing can disturb your peace of mind.
Talk health, happiness, and prosperity to everyone you meet.
Make all your friends feel there is something special in them.
Look at the sunny side of everything.
Think of only the best, work only for the best, and expect only the best.
Be as enthusiastic about the success of others as you are about your own.
Forget the mistakes of the past and press on to the greater achievements of the future.
Give everyone a smile.
Spend so much time improving yourself that you have no time left to criticize others.
Be too big for worry and too noble for anger.