A happy manager ensures their team's happiness by being a leader, motivator, and manager. As a leader, they help others succeed through sharing, learning, and contributing equally. As a motivator, they incorporate fun activities like social gatherings and team outings to refresh the team. As a manager, they create a happy workplace and motivate others through productive teams and a healthy work-life balance with diet and inspiration. Overall, a happy manager leads with their head, heart, and hand.