Here are a few verses by Mother Theresa.
The good you do today, people will often forget tomorrow; Do good, anyway.
People are often unreasonable, illogical, and self-centered; Forgive them, anyway.
If you are successful, you will win some false friends and some true enemies; Succeed, anyway.
If you are honest and frank, people may cheat you; Be honest and frank ,anyway.
If you find serenity and happiness,they may be jealous; Be happy, anyway.
Give the world the best you have, and it may never be enough; Give the world the best you've got, anyway.
With Love, Amma-Naana