Same here, actually. My LJ is the first 'diary' I've ever managed to keep, because I can't /write/ about stuff without having a percieved audience. I've tried private entries, and there's just the the thought, "I already know what the hell I'm thinking, why write it down?" going over and over again.

Also, about the having not to post some things because of how people you know read the LJ will react. Or knowing that they'll react negatively. It's not really the "I disagree and you're stupid" that bothers me, but other emotional reactions.

So, basically, just...my sympathies. What I know some people do is create another LJ and not give the name out to their current friendslist, and use it for the venting that needs to be done. Might that help? Still an audience, just less likely to be the ones who'll take offense.