What are your weaknesses?

I tend to be very critical of myself, and sometimes a tad too quick to criticise both myself and my efforts. Depending on my mood and life circumstances, I suffer from a lack of confidence in myself (what I mean is, mostly I'll be fine, but sometimes I can be a bit....well, lacking in the confidence department!) I also have an annoying tendency to speak before I think, for example, this one guy in my class (who's really annoying, he's loud and irritating while the rest of us are trying to get work done) knows I can't stand him because I didn't look around before I said he was bugging me!

Jam it back in, in the dark.