People who go their own way may well become leaders, simply because to go your own way you have to be decisive, and most people are indecisive, and in times of uncertainty they will look to people who are decisive to take the lead.
But that doesn't mean that the qualities listed are leadership qualities. I'd say that the ability to understand and empathise with people, to figure out what they want, the ability to motivate others to do their best, the ability to communicate convincingly, and the ability to make decisions under pressure - all those are way more important than the ones listed in the quote.
Of the list of leadership qualities:
> courage, endurance, patience, humor, flexibility, resourcefulness, determination, a keen sense of reality, and the ability to keep a cool and clear head even when things are going badly
I'd argue that only the last one is really a requirement for leadership. All the others make for a better leader, but they are not requirements.