In case you don’t know the “Serenity Prayer”:
“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.”
Also, don’t confuse it with Matthew’s prayer:
“When you pray, you shall not be as the hypocrites, for they love to stand and pray in the synagogues and in the corners of the streets, that they may be seen by men. Most certainly, I tell you, they have received their reward.”
And finally, don’t confuse it with the Matthew effect:
“For to everyone who has will more be given, and he will have abundance; but from him who has not, even what he has will be taken away.” — Matthew 25:29