You should begin by gathering textual evidence. With the textual evidence, you will be able to provide quotes that will help support your analysis.
Kennedy claims in this excerpt is that basically nothing is impossible. The things that are considered extremely difficult to reach are possible if you are willing to do them. The capability or the limits of a person are only established by him or herself.
Possessive common nouns are common nouns or pronouns that own other nouns. Apostrophes are used to indicate this possession. Example: I will not hide the teacher's glasses.