To know oneself, one should assert oneself.
The most effective way to do it, is to do it.
Who seeks shall find.
Well done is better than well said.
The wise does at once what the fool does at last.
Be gentle to all and stern with yourself.
I can, therefore I am.
Never complain and never explain.
The dog that trots about finds a bone.
It's always too early to quit.
It is so often true that whether a person carries with him an atmosphere of gloom and depression or one of confidence and courage depends on his individual outlook.