Emotion Is Not A Dirty Word
Emotion, in business, is not a dirty word. It's the natural by-product of passion.
Passion is not a sign of naivety. It's an essential ingredient for success.
The converse - cool, calm and collected - isn't whats needed when there are people to be brought along, a mission to be accomplished, a dragon to be slayed.
Emotion is what's needed.
A willingness to show how much the goal means to you.
That you're willing to put it all out there for the cause.
That you're ready and willing to leave every ounce of yourself on the field of play.
If on top of that, you feel the need to put up a front because "that's what the troops need to see", then you've already lost the battle.