Do happy people make better leaders?

"The key link between happiness and leadership effectiveness, the researchers say, seems to be that happy people typically demonstrate a certain management style called transformational leadership.

Transformational leaders are skilled at things like inspiring and motivating their team, stimulating their team intellectually, and mentoring their subordinates. (A popular example of a transformational leader is Nelson Mandela.) Studies have found there’s a strong correlation between transformational leadership and leadership effectiveness."