You may have previously posted about this, but can you tell us a bit about how you got from where you were to where you are now? As I recall, you pretty much did it on your own, yes?
I can't really say I did it on my own, as I did get counseling from a CBT specialist who specialized in chronic pain patients. And while tinnitus isn't painful, apparently there are some similarities between the two. But I think there are a series of things that helped facilitate habituation for me. CBT counseling was definitely one of them.
Early on with having tinnitus, the only answer that I wanted to hear that I thought could bring me relief was, "What you have is not just a treatable condition, but a curable one. Don't worry, you'll be back to your old self in a week or so."
But as I was suffering with my tinnitus, I talked to my dad and told him about what was going on. Well, it turned out that he's had tinnitus for over 30 years due to hearing loss in the military. No only does he have hearing loss and tinnitus, but he also has distortion in his ear with tinnitus. And all of this time I never knew any of this until I started complaining about my tinnitus. He's never complained about it, nor has it ever to my recollection, kept him from living life, raising me and my siblings, having a successful career, etc. He told me it used to drive him crazy for years, but now he says he hardly ever thinks about it and it doesn't affect his daily life. He does admit that it is why he likes to sleep with the TV on though, so it can help mask his ringing.
Then I remember I was talking to one of my friends who is a doctor and was telling him about my ringing, and he told me he has it too. His was due to brain cancer surgery and now he is 100% deaf in one of his ears and has loud tinnitus in that ear. But this all happened to him before med school and he was able to go through med school and now has a successful career, got married and has kids. Anyway, to make a long story short, I began to talk to people and was surprised at how many people have tinnitus, and are living full lives. Not just living life around tinnitus, but actually living life as if tinnitus didn't exist, or at least not with any real impact on their life.
So back to my habituation, I realized that a cure simply didn't exist. But I began to realize that another way for me to be "cured" was that if the noise didn't bother me, then I wouldn't be so anxious and suicidal. And something stuck with me that my first ENT said. After he examined my ears and everything, he told me that he also has tinnitus in both ears and has had it for over 40 years... basically since he was a kid. He told me that he always thought it was normal; that is, he thought everyone heard the "ringing". He said it wasn't until he got to med school that he began to realize that what he had wasn't normal. Anyway, it made me think, "If I were born this way, then I wouldn't know any better. It would just be the way the world worked. It's only because I know it's not normal that it bothers me."
So I was determined not to let the ringing bother me. At first this was really hard to do, because it's hard to actively not notice something. But I went to work, I hung out with my wife and daughter, I hung out with family and friends, etc. In fact, I remember on several occasions when I wasn't doing well, I'd have a friend come over and we'd hang out... anything to take my mind off of my situation.
Then, last year I got a cancer scare (unrelated to tinnitus). Suddenly I realized my mortality greater than ever. I began to worry about my wife and daughter and was thinking about how I might not ever see my daughter grow up, get married, etc. Suddenly, worrying about tinnitus just seemed silly. Well, luckily there was no cancer, but it really put things into perspective for me.
Over time, I started to habituate passively, which I take it is supposed to be the way it's done. Tinnitus no longer had my primary attention, it had my secondary attention, and I've been at this stage for the better part of a year. I has only been in the last couple of months that there are large amounts of time when tinnitus doesn't have my attention at all.
So what helped me habituated? Well, for sure, acceptance. As long as I demanded a cure, I put myself in a no-win situation.
Next, learning and meeting about all the people I personally know who have tinnitus that I didn't even know had it, but are living full lives and not being controlled by tinnitus. I realized that if they could do it, then I should be able to as well.
Hanging out with loved ones, realizing that tinnitus can't stop me from enjoying the company of friends.
And of course, that cancer thing that helped me realize that tinnitus just simply isn't the worst possible thing that can happen to me. In fact, I had a college professor who was blind. He wasn't born blind. He got a virus in high school that attacked his optic nerves. I have no idea how, but he seems pretty happy with life, although he must get a lot of help. But if he can get along in life, then of course someone like me with just tinnitus can as well.
Sorry for such a long reply to your question... but as you can see, it's not an easy answer. But here's something I have been thinking of for several months: We can choose to face the day by being bitter about tinnitus and lay in bed all day, or we can choose to live the day by doing the things we enjoy. Regardless of which option we choose, we'll still have tinnitus at the end of the day. So why choose the former?