A metaphor for courage might be describing someone as having "the heart of a lion". He does not actually have the heart of a lion, it's a metaphor to show that he is courageous.
To evoke a sullen response, someone could punish another person.
Answer:
I believe he means that in the Caribbean people died so young that he imagines it so often. He thinks he needs to make any happy/good moment last so he remembers that.
Explanation: