Read the following context and choose the best option to answer the question.
Context: It ... it always does . After all , I ca nt have my happiness falter now . " I have to go on and keep being myself , for If I do n't , there will always persist that risk that someone else may have nothing to go on for themselves . " " You know , I think people take too much for granted , they should wake up and just be happy that they are alive .
Question: What is the disposition of this narrator ?
Options: 
- They are unhappy .
 - They are selfish .
 - They are an optimist .
 - They take things for granted .


They are an optimist .