"A writer's job is to imagine everything so personally that the fiction is as vivid as memories." -- John Irving.This is something I've been working on lately. I like to think of it as writing AS the character instead of writing ABOUT the character.
I wrote a short short over the weekend and spent a lot of time with my eyes closed, imagining the scene and the main character's actions. I didn't get it one hundred percent correct the first time out, but that's what rewrites are for. :)