The leader I choose to share about is Mother Teresa. A brief introduction would be she was a great leader that was internationally famed as a humanitarian and advocate for the poor and helpless. She won the Nobel Peace Prize in 1979 and India's highest civilian honour, the Bharat Ratna (Awarded for the highest degrees of national service), in 1980 for her humanitarian work. For over 45 years she ministered to the poor, sick, orphaned, and dying, while guiding the Missionaries of Charity's expansion, first throughout India and then in other countries.
The traits that I think "good" leaders possess are focus, responsible and caring.
For being a focused leader, it is very important when a leader wants to achieve his or her goals, as an unfocused leader would never be able to lead the team towards their goals, be it the goal of the organization or the goals of the individual team members. Being focus would ensure the team can avoid crisis and stressful situations especially heavy workload. A focused leader would also help the team to manage efficiently in times of crisis. A leader is like the captain of the ship, if the captain is not focused and clear in where he needs to go, the whole ship will end up being lost!
For being responsible, I think it is a crucial and essential trait for a good leader to possess. A person who is scared to take responsibility and ownership for not only his work but also for his or her team members can never prove to be a successful leader. So one of the most important traits of a good leader is the ability to take responsibility for himself and those who work with him. At times of crisis or under stressful situations, he would need to make responsible decisions and continue to guide the team efficiently.
For being caring, it is personal but I think for a leader to be "good" he needs to be caring, for himself and also for his team, to ensure the mental and physical wellbeing of every individual of the team and that the team is always together as one and not split individuals. This would also ensure the team remain solid and stable at times of crisis or under stressful situations or workload. Being caring would also mean he would need to influence the team in such a way that is effective, but also morally upright and ethical at the same time. (From my definition, this means a good-at-heart leader, greatly differentiated from successful leader.)