The Serenity Prayer by Reinhold Niebuhr

"God, grant me the serenity to accept the things I cannot change,
courage to change the things I can
and wisdom to know the difference.

Living one day at a time;
Enjoying one moment at a time;
Accepting hardships as a pathway to peace.

Taking, as He did, this sinful world as it is, not as I would have it;
Trusting that He will make all things right if I surrender to His will;
That I may be reasonably happy in this life
and supremely happy with Him forever in the next. AMEN."