Writers Block, Character Studies?

I don't know what's going on. I can't seem to write anything. I've been at work browsing the facebook for the past 2 hours. It’s 9:10. I get out of work at 10:00. I'm so bored but I can't seem to write anything. I don't know what to do. I wanted to finish the character breakdowns so I could start on the screenplay tomorrow morning. Maybe it's cause I’m so tired? I barely got any sleep last night. Well that's not entirely true. I got about 6 and half. But that's not good. I don't know. It just seems hard to get anything out. It took my like an hour just to do Brandon’s. Maybe it's because I know him? Maybe the characters I know real well will be hard to write about. That doesn't make any senses. hmmm.... ... ... sigh. Maybe I’ll work on something different for the movie. Yeah. I’ll do those bird eye view things of the set. That’ll keep me busy and productive. Hopefully tomorrow I can get on those character studies.