I would start with the most important thing a quarterback has to be: poised. If you panic in that pocket, you are no good. I don't care what else is there; you have to be poised.
Poise is the foundation of effective leadership and performance under pressure. A calm and composed quarterback can make clear decisions, maintain team confidence, and adapt to changing circumstances on the field. Panicking not only impairs individual decision-making but can also spread chaos within the team environment. This insight extends beyond football; in any high-stakes situation, remaining poised is often the key to success, allowing one to navigate challenges with clarity and confidence.