But Kirk did cheat death, just not by his own means. Now he absolutely knows that when he dies for real, his friends will not be able to save him. He will be, for lack of a better word, alone.
At the end of the next movie these characters should have evolved into the people we know from TOS.
Kirk is confident, but not brash and arrogant. He will be dedicated to his ship and crew, with little time for distractions.
Spock will have better control of his emotions, and there will be no romantic involvements to complicate things.
McCoy will be Kirk's confidante and conscience.
Scotty will be, well, Scotty.
Uhura will have moved on from her infatuation with Spock, Sulu will have begun his journey toward his own command, and Chekov will cultivate a Beatle 'do and start talking about little old ladies from Leningrad.
Carol Marcus, if she appears at all, will be moving toward a civilian career. Kirk's goodbye to her might be end up in a one night stand that leaves her pregnant, but I doubt it will be part of the story.