To be honest, I don't know if I'd WANT to unblock it. It was your mind's way of protecting you from something you'd would not have been able to deal with. Could you deal any better now? On occasion, particularily in the last eight or nine months, I've had memories resurface....it's not fun. Over time...when you can deal, your mind may unblock some of it for you. I would not purposely try to rush it. Regression therapy is NOT recommended for BPDs for this reason.