I don't get it. Why do all my websites look ugly, when I'm the one who designs them? Or is this a mental artist-y thing, where I don't like my own work?

I've been looking around at other websites (facebook, livejournal, google, random sites), and no matter what I look at, it all looks 'better' - although I can't exactly say how it's 'better' or more importantly, why it's 'better'.

I've only seen one truly hideous site. Ok, not including kiddie crap, like myspace or bad xanga journals...