BE AMBITIOUS AND UNREASONABLE
If Alexander the Great had been reasonable, he would have realised that he could only rule his tinpot state on the far edge of Greek civilisation. Alexander the Great was not reasonable. He conquered the whole of the known world, and a bit beyond, by the age of 30. That is why he became Alexander the Great, unlike his obscure cousin Alexander the Reasonable.
Being reasonable is a disaster for leaders. There are always reasons why the project will be late, why costs must go up, why we must cut our prices, why budget will be missed. When you accept excuses, you accept failure. Good leaders are ambitious and unreasonable.
Ambition is not just personal ambition, although that is needed if you are to survive ...