He starts as a naïve young adult who is an outcast, but over the novel he finds personal strength and a chosen family through team work and perseverance, to ultimately become a demigod hero...hope this helps!!
Infinitives in the English language are relatives easy to spot. You just have to locate the word TO followed by a verb.
Here, the infinitive is to eat.
There is another TO in the sentence (to music), however, the word music is not a verb, which means that <em>to music </em>is not an infinitive.