There are two things a person should never be angry at, what they can help, and what they cannot.
More Traditional Proverbs:
Judge not thy neighbor until thou art come into his placeTraditional
A tough apple skin means a hard winter.
Traditional
The mother-in-law remembers not that she was a daughter-in-law.
Traditional
If a dogs prayers were answered, bones would rain from the sky.
Traditional
You learn through mistakes - no one was born a master
Traditional
Rome has not built in a day.
Traditional