I'm sorry you are having a rough day. I, too, have issues with obsessing about the past, leading to guilt and shame, so I understand how hard it is to deal with. I'm glad you are seeing a counselor. Hopefully, the counselor with help show you ways to cope with this and to understand how it is faulty thinking. Distorted thinking causes me all kinds of problems and I need someone to help me realize how much it is hurting me and to help me turn it around in my head. You might want to read about distorted thinking and techniques to help turn it around so you won't feel so bad.

Here is a link that explains these distortions:
10 Distorted Thinking Patterns : Sources of Insight

If you are already familiar with them please disregard, but I find them to be a direct cause of pain in my life. I'm only a little OCD, but these thought patterns can afflict anyone. I hope you find help with your new psychiatrist, too.

The other thing I do to help with anxiety is breathing exercises, such as the following:
Take a deep breath in through your nose to the count of 4.
Hold your breath to the count of 7.
Exhale through your mouth to the count of 8.

I do this 10 times to relieve anxiety symptoms. It takes practice.

Take care Briseus.