These roles are: (1) chief of state, (2) chief executive, (3) chief administrator, (4) chief diplomat, (5) commander in chief, (6) chief legislator, (7) party chief, and (8) chief citizen. Chief of state refers to the President as the head of the government. He is the symbol of all the people.
Happiness is a good feeling people get when they do something they enjoy. For example, since you used religious lyrics, praying can make you feel this.
