An inspirational poem I ran across recently. It exists in many forms, was attributed to Mother Teresa, but was probably actually written by someone named Kent Keith:
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People are often unreasonable, illogical and self centered;
Forgive them anyway.

If you are kind, people may accuse you of selfish, ulterior motives;
Be kind 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.

What you spend years building, someone could destroy overnight;
Build anyway.

If you find serenity and happiness, they may be jealous;
Be happy anyway.

The good you do today, people will often forget tomorrow;
Do good anyway.

Give the world the best you have, and it may never be enough;
Give the world the best you've got anyway.

You see, in the final analysis, it is between you and your God;
It was never between you and them anyway.