I have always loved this prayer. It is very inspirational to me. It lets me know and reminds me that not everything can be change for the greater good, but you could always hope for a good outcome. Even when you know in your heart you know it would never change.

 
 
 
 
 
God grant me the serenity
to accept the things I can not change;
 courage to change the thing's I can;
and the wisdom to know the difference.