Character Change

The main character in the second story out of two book by Ransom Riggs named  Hollow City, is Jacob Portman. He started off as a 16 year old teen who was very insecure and not quote on quote "popular" Back home that is . In the first book Miss. Peregrines Home for Peculiar Children, Jacob overcomes many obstacles and learns who he is as a person with the help of his peculiar friends. Now Jacob in the second story (Hollow City) still brings insecurities with him because of the fear that he can not save his friends. He thinks they expect him to be the hero.  He doesn't think he has it in him to do it. A very strong courageous thing that Jacob did was use his peculiar powers to fight off the Hollowgast (an evil creature trying to kill peculiars). This in the end saved him and all of his friends. Jacob has become a stronger, more mature, and courageous person in my opinion. Can he maintain being the hero for the sake of his best friends who have now become his family, or will his insecurities take a turn for the worst?