Just read an interesting post on this subject, and it's something I've been guilty of in my writing. When I'm in a situation where my protagonist has no other characters to speak to, and/or speaking aloud to himself would be inappropriate, I have been known to use something like: I need to do this, he thought. Everything rides on this. What is your opinion on this kind of thing? Does narration have to be more realistic, as if I were transcribing the story as I watched it unfold? I do try to stick to "show, don't tell" but sometimes it just seems like the most powerful way to get something across is to let you into the character's thoughts. Without having to remodel a plot to fit around a first-person perspective, that is.