I really feel like my PP is getting to me. Sometimes I do things and I cannot understand after the fact of do so why I…

I really feel like my PP is getting to me. Sometimes I do things and I cannot understand after the fact of do so why I did what I did. Most of the time I seem to take the anger out on myself and beat myself up about it (sometimes physically and emotionally) I don't feel entirely comfortable posting everything because of how self-conscience I have felt about this. I just need to vent some how. I need to know I'm not alone...