What would be examples of ERP exercises for pocd

Exposure and Response Prevention (ERP) isn't always easy, but as one of the most effective treatments for OCD, it's worth it. If you've started ERP, what has been the biggest surprise you've experienced in learning to resist compulsions? If you haven't started ERP yet, what is holding you back from starting?

Been struggling with existential OCD lately. Very hard to describe the thoughts/feelings, but it is a constant feeling of being stuck in my head. Like what is consciousness and where do I think from? Like I think it’s OCD, maybe it is maybe it isn’t. But if it is, what would be good ERP exercises? Just existing (lol)? And what would be my response prevention? I’m not even sure what mental compulsions I may be doing.

What would I do for ERP if my OCD says because I didn’t do something correctly or remember something I will have panic attacks that don’t end?