Go placidly amid the noise and haste, and remember what peace there may be in silence. As far as possible without surrender, be on good terms with all persons.Speak your truths quietly and clearly and listen to others, even the dull and ignorant, for they too have their story.
Avoid loud and aggressive persons; they are vexations to the spirit. If you compare yourself with others, you may become vain or bitter for always there will greater and lesser persons than yourself. Enjoy your achievements as well as your plans.
Keep interested in your own career, however humble: it is a real possession in the changing fortunes of time. Exercise caution in your business affairs, for the world is full of trickery and deceit. But, do not let this blind you to what virtue there is: many persons strive for high ideals and everywhere life is full of heroism.
Be yourself. Especially, do not feign affection. Neither be cynical about love for, in the face of all aridity and disenchantment, it is as perennial as the grass.
Take kindly the council of the years, gracefully surrendering the things of youth. Nurture strength of spirit to shield you in sudden misfortune, but do not distress yourself with imaginings.
Many fears are born of fatigue and loneliness. Beyond a wholesome discipline, be gentle with yourself.
You are a child of the universe; no less than the trees and the stars, you have a right to be here. And, whether or not it is clear to you, no doubt the universe is unfolding as it should.
Therefore, be at peace with God, whatever you perceive Him to be, and, whatever your labours and aspirations amid the noisy confusion of life, keep peace with your soul.
With all its sham, drudgery and broken dreams, it is still a beautiful world. Be careful. Strive to be happy.   

(One popular story tells that this writing was discovered in the rear rooms of a church in Baltimore, U.S.A., in 1694 and that the author is unknown. This story is nice but incorrect. The piece was written in 1927 by Max Erhmann and he has given us an extremely good encapsulated recipe for living our lives which is just as valid today as it was all those years ago.) 
The Rules For Being Human.
The Pain Release Pages.
Quotes and Links.