"High levels of emotional intelligence, our research showed, create climates in which information sharing, trust, healthy risk-taking, and learning flourish. Low levels of emotional intelligence create climates rife with fear and anxiety. Because tense or terrified employees can be very productive in the short term, their organizations may post good results, but they never last."
Goleman believes these results show that demonstrating Emotional Leadership (ie. optimistm, authenticity, positive energy) is a good Leader's main task.
It's not easy for Leaders to sustain positivity, and coaching is a very supportive environment for fostering emotional Leadership.
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And here to read the HBR article: