Oh god, I assumed Chelsea was a separate leaker from Bradley Manning, and instantly thought "Well, she was probably acting rash" - whereas my opinion of "Bradley Manning" differed.
Well, at least realizing your bias puts you ahead of the other 99% of people who think they aren't biased, and you can try to keep it in mind and reexamine decisions. That's what I try to do, as much as I'm capable, at least.