Bad habits. We've all got them; so what's the worst of yours? Feel free to define "worst" to your own liking, for example, unhealthy, annoying, weird, frustrating, disgusting, etc. etc.. For me, it's biting and picking my finger nails. I've done it since I was a child. It's crazy, but I can't seem to stop. It can be subconscious at this point since I've been doing it so long. Now don't get me confused with those freaks that bite their own toe nails, for me it's just the fingers. My wife hates it and I know I need to stop, but hey, tough habits are hard to break.