Yeah, I have that problem. I don't really reveal too much to strangers as much as just feel the need to tell too much in general. For myself, I think it comes from this family weirdness: You were expected to read minds. If you couldn't read someone else's mind, and you didn't know without being told what they were expecting out of you, you were BAD. However, if you just admitted fault upfront (and the N in the family could feel superior) it went much easier with you. So that I ended up spilling my guts about stuff because I have a deep need for people to understand my motives and that they were well-intentioned.
I came from a clan of what could be thought of as mind readers. One of the clan taught the trait, our Mom. From almost any encounter from which she may have garnered patchy 'facts', she could weave an entire story filling in the blanks and present them as if they were the gospel truth. My recall is that growing up, we all believed her fabrications. I caught on to this trait in her way past my own mid life. I have very strong intuition. It's there, but I'd not want to hang my hat on it's validity without a reliable backup 'second or third source' as the journalists say, especially if I were patching together facts to make a story that I could stand by. Anyway, coming into mid-life, I found that my intuition (which I think I was born with) complimented what I'd learned at her knee, i.e., filling in the blanks by pure fabrication, much the same way the tabloids do, thereby enticing us to gobble up the latest news as we wait in the check out line.
Going into recovery, of my many dysfunctions, this was one of the easiest to correct. I have no desire to indulge in hearsay, or scuttlebut. This whole process of straightening ourselves out is just that, a process. One stage, one step at a time. This thread has given me pause to review one of the steps where my progress has made a difference in how I think.
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