Happiness, well-being, companionship, weaknesses, growth, health, healing, positive thinking, and many more.
It is used to deliver all direct and indirect characterization
The most common are 1st and 3rd person. 1st person is when you tell a story from your point of view, using the pronouns "I or we." And 3rd person is from an outside point of view, using the pronouns "he, she, and they." 2nd person isn't very common because it uses the pronoun "you," and makes the audience a character in the story. Hope this helps!