Great question! A couple thoughts:
First, I've encountered a belief that tinnitus volume is a constant, and what changes is one's emotional response to it, "if it sounds louder one day to the next, that's because you're experiencing more stress that day." My experience is not that at all, and that tinnitus has a volume rollercoaster independent of emotion. One day it's louder, one day it's softer, irregardless of emotional state. Otherwise, it's easier for a doctor to blame the patient, and based on a fallacy.