What’s a central idea for “little things are big”

The central idea here is that even small joys in life can change a person's mood or little tiny incidents can make a person learn big things.

third person

explanation:

note the usage of names and pronouns, "james" & "the old man". this alone can confirm it as third person, as first person uses "i" and the like, while second person uses "you" and the like.

~