nothing whatsoever

It's happening again: I feel like my head is bursting with the things I want to say, and yet the words won't come. As soon as I actually start typing a sentence, it seems so trivial and insignificant I just have to delete it. What is wrong with me?... How can I possibly write fiction, if a simple journal entry seems too much?...

Maybe I should just come to terms with the fact that I have absolutely NOTHING relevant to say. I'm just an obsessive-compulsive graphomaniac (is that a word?...). Maybe I should copy a telephone book or something... *sigh*