In a state of mindfulness, one will simply notice the itching, or report the itching and the impulse to scratch it. In a state of mindfulness, one will simply notice and report the thought. In a state of mindfulness, rather than look for a story to attach to the mood, one will simply notice and report the irritation. Resolution is an automatic physical, cognitive and emotional sequencing process. We can interrupt it but we can't make it happen.
Mindfulness helps allow sequencing.
Consider the itchy nose. Sometimes our nose itches because something is physically stimulating it. Other times a nose itch might be part of a process of resolving stress or trauma. For example , someone was punched in the nose in a fight. He recovered physically and mastered the threat of a future recurrence.