In the book Lone Survivor, by Marcus Luttrell you can see the change happening from the vary beginning.  From the very beginning Marcus who is the main charicter is in his perspective of when he was a Navy Seal.  This is going to be critical for the whole book, because you get to actually be there when the events are unfolding.  Of course not physically but mentally.  He is beginning his tour in Iraq and narrating himself as he does so.  He has been a Seal for quite some time now with his brother Morgan.  He has a closly knit group of fearless men he who are completing his missions with.   All of them have been fighting for years togather.  The story begain when they were on there flight over to an Iraq air strip in there "flying wearhouse" as they called it but in all reality it was just a big military plane.  The first changes you see is when he is reflecting back to his childhood.  His brother morgan is a little better than he is it seems at everything.  Weather it be swimmjng running whatever. But when he is on this plane he seems really confidint, almost non submisive to anyone.  I think that the catalist for this was when they were in highschool.  He and his brother morgan both new that they wanted to be Seals because of there family legasy, so they decited to meet and train with a former Seal.  This man really hardend Marcus and tought him to dig deep and beleve in himself.

- Weston S