There's a certain point where you just get tired of constantly being scared. Jakun hit that point a while ago, and he's been forcing himself to push through.
Fun note, Amnor Sen is what is called a Virtuous Bravo, that is a paladin who relies on dexterity over strength. So his build is similar to Geralt's, minus the whole mutagen thing. In PF, Geralt would certainly be a fighter or paladin with magus and alchemist dips. And Jeremy's religion is very reminiscent of a bard, complete with drink, boasting, and laying anyone who catches his fancy.