When there is fear of failure, there will be failure.
Make your plans to fit the circumstances.
Why is it that all battles are fought in the middle of the night, in downpouring rain, and at the corners of four different maps?
There is no such thing as a successful defense.
When in doubt, observe and ask questions. When certain, observe at length and ask many more questions.
Americans play to win at all times. I wouldn't give a hoot and hell for a man who lost and laughed. That's why Americans have never lost nor ever lose a war.