I am no doctor so this is only my personal opinion. Personally, I believe anxiety can actually make T louder, at least perception-wise. I think when we are very anxious, the limbic system is activated as the object of anxiety, tinnitus, is now considered by the limbic system as a potential threat. This will cause the Amygdala to take over in processing the T signal/stimulus and it can surely fire up our emotional response to this threat. Our senses are sharpened and focused on this threat, ready for the fight, or flight. This will make T so much dominant in our senses and that is why it is very hard to not focus on it initially. The brain neurons may be in hyperactive state when the limbic system is dominant and so the pseudo sound it creates, our tinnitus, will appear that much stronger in intensity. So we need to find ways to get out of the control of the limbic nervous system.