Feelings of guilt or shame overwhelming

I'm feeling overwhelming feelings of guilt or shame, like I've done something wrong or I'm ignoring something important. I'm not sure if this is because I lowered my Xanax by 1 mg today or not. I've had these feelings before. I feel like a little boy who's done something really wrong and his parents are going to come home and beat him. I'm going through a level 9 panic attack, and trying to use my coping techniques to get through it. I'm going to try and do chores around the house to make myself feel like I have done something to counter-act these feelings, and see if I can get my positive self-dialog going. If I can muster the strength, I'll even go for a walk but that seems really scary right now.