Yeah, we're talking about those crusty, dried out clots of blood. The protective coating we grow while our wounds heal.
But we're also talking about the wounds. In fact, we'll start with the wound. What's hurting you? Haunts you, or lingers and just won't let go?
Figure out what the scab is, too. What are you using to protect yourself from harm? Denial? Humor? Anger?
Figure it out. Write it down.