Wow! Are you me?
I relate to this as well. I thought it was my personality, (a tendency to be insecure, and take things far too personally) but now that you mention it, I guess it could be part of the illness.

I really hate this part of myself - it's so exhausting. I feel like I'm apologizing to my husband for my overreactions at least twice a week.

Oh, sorry. Hi, I'm new. I have bipolar II, but haven't got around to introducing myself in the BP section yet.