I could not agree more with Markku. I am doing a whole lot of stuff to work on my tinnitus (supplements, mediation, Neuromonics, barotrauma specialists, acupuncture, medication.) But cognitive behavioral therapy has helped me more than anything. It's a tool that will help you build a more peaceful life, not just for tinnitus.
I also wish I was better habituated at six months --but I DEFINITELY am much better than I was before.
I think the CBT/Buddhist/mindfulness concept of acceptance is misunderstood by some here. It's not about being passive, just rolling over and sighing, "Oh, I can't do anything about my tinnitus." It's not "just learn to live with it." It's about accepting the fact that it is in your life, making peace with that, then moving on. You will find it is much easier to find ways to help yourself -- and there are ways to "treat" your tinnitus and make it better, no matter what the doctors tell you -- once you move that big boulder called objection out of the way. It's keeping you trapped where you are, miserable and panicky. You found a way to get better at physics: you accepted that you weren't good at it then found a way to make it better (studying). You can do the same for tinnitus. CBT basically teaches you to refocus the way you think about approach problems, stresses, so you can move forward to solutions.
You will need to accept that you will have good days and difficult days, especially in the beginning -- something that is part of life. You also will learn to let go of the misconception that you can control everything in your life. You can't. Learn to accept what you can't control ("I have tinnitus") and embrace what you can control ("I can see what supplements might help me, protect my ears in loud situations, try meditation," etc.)
Also, I have heard people suggest here that "acceptance" somehow makes you less proactive. Not true. BE an advocate for more research, better treatments. Seek out the best help you can find, demand quality time from your doctors and dump the ones who don't give it to you. Acceptance doesn't keep you from doing any of that. If anything, it helps you help others as well as yourself.
Oh, and I suggest you find a good professional to help you with your anxiety. As I recall, you are taking a bunch of meds, yes? That doctor is not helping you and I don't think the medication is, either. Find a good psychiatrist, a good CBT therapist, and go from there. Yes, you may need medication in the beginning. I did. But your current doctor seems to be nothing but throwing pills at the problem.
I do feel for you. I was exactly where you were five months ago... so miserable, I really didn't see how I could make it from day to day -- in fact, in some cases, from hour to hour. I had rolling panic attacks and could not sleep. CBT gave me the foundation to rebuild my life with tinnitus. Hey, I still have days where I think: God, my tinnitus sucks and it really is annoying me. But I have my life back -- and it is a good life, filled with promise and happiness.
Blessings. Sorry for the long post.
D