I have always adhered to two ...
More phrases
Effort only fully releases its reward after a person refuses to quit.
Never complain and never explain.
A good plan violently executed now is better than a perfect plan executed next week.
George S. Patton
Problems are not stop signs, they are guidelines.
Robert Schuller
Never give up, for that is just the place and time that the tide will turn.
Harriet Beecher Stowe
Quotes from the same author
The greatness of Marciano in the ring was defined by the way he prepared for a fight, his ability to punch and take a punch.
Rocky Marciano
I was on my face. I heard the count from one to 10. I kept telling myself that I had to get up, but I couldn't move. I couldn't make myself move. It was the strangest feeling.
Rocky Marciano