Ho does the protaganist see himself or herself that is different then how other people see him?

Philip sees himself as ''helpless", ''obsessed with war person" and "scared", but he's wrong, Timothy has been with him on a raft and island for a long time and he knows and he is certain that Philp is brave, now understands the concepts of war and is very mature and has grown up and experienced things that not many people go threw.