Your one example (concert tickets) does not seem unreasonable to me. You were hesitant (call it "paranoia" if you like) but your better judgment got the best of you, and you sent it anyway. It was a friendly gesture, and if someone reads something bad into it, that's their problem. That tells me that you are still in control and rational, just a little gun shy, most likely from experience.
As for posting on WP, I hesitate once in a while, depending on the subject. More often, I'm fussing over spelling and such nonsense. And then I go back and edit it three or four times for dumb little things. You're allowed to do that here.
And like the paranoid packman ghost said,
Fudo wrote:
Just because I'm paranoid, doesn't mean they're not out to get me

Manders wrote:
Yeah, insecurity is a big issue with me. I do get paranoid about being watched though.
I still wouldn't call that "paranoid." Half the time, when people are watching you too closely, they ARE "out to get you," in that they're looking for something little thing to pick at, or they're bored and don't even realize that they're looking for something to pick at. Very annoying, at the least.
Manders wrote:
this website has really been nothing but helpful...I've never encountered it on WP.
You will. We have a few trolls here. So few that you can usually ignore them. But if you report them, they go away. It's like magic.
List of moderators, as of Sept 2008:
Quatermass, lau, SinsBoldly, makuranososhi
(I thought I saw an updated list around here somewhere.)