Does anyone else here do this? I have felt such shame, constantly thinking of how I've acted foolishly in the past. It has gotten to the point where I have had no friends for several years and often end up speaking only a couple sentences per day or less. I feel shame whenever I talk and realize it, and if I say even a few sentences in a single moment and then realize what I have done, I feel extreme shame that lasts for hours. This applies to just about everyone except for my parents, and even then, if I hold a longer conversation with them, I will often feel shameful afterwards. 
I have also taken note of my clinginess, and I try to distance myself from others as much as possible because I don't want to ever go through the social hurt I have gone through previously.
I am a natural introvert, but I feel that things have gone in a much more restrictive direction.