Today leadership has been subjected to a title and not developed. It is skill that isn't given but learned the trough ups and downs. As potential leaders we steer clear of projects or assignments that would highlight our weaknesses instead of embracing them to learn and grow. Every has examples of leaders that on paper they would seem "perfect" , but in reality the worst they ever seen. These are the attributes that I found in people that build the foundation of a good leader:
Willingness to fail
Has respect for others
Able to collaborate
Lead by example