Gosh that’s very awesome to hear, that you feel that way? Because I do try very hard to do that! However I am not really sure about how to advise on it, which sounds lame but it’s true! I suppose mostly it’s practice, and I did used to do a lot of RP writing, which requires getting into the skin of a character so completely that you can respond in their ‘voice’ almost without thinking. It was a great exercise for spontaneous plot reaction too- and really that is all a story is. You put a character, who is and exists and has feelings and a history, into a situation; you let the character respond to that situation, and that is how the story happens. If you put a character into a situation and force the outcome then it won’t feel right, no matter how many lens flares and explosions you put in; the motions of the characters have to come from the emotions of the characters, and I guess every show, game and movie has their own emotional vibe and sense of timing as well? Treat the world as a character: how does it breathe? Space and time are inherently linked, perhaps we can say that every ‘world’ has its own form of time; so how does that space dictate the timing of the story you want to write? Maybe that’s nonsense. Maybe I don’t care.
Basically get out there and try and try and get it wrong until you get it right!