This video confirmed my theories.
I've had T since 2 years.
Being a DJ for hobby since 1989 I was exposed to loud sounds since I was very young, but never had any problems. Also, a month before I slightly hurt my ears while descending with a plane (barotrauma), where my ears couldn't properly compensate the pressure change due to a flu, so I think that I damaged my ears with these two things. But none of the two caused any T. The airplane incident though left my ears blocked for weeks.
One morning 2 years ago I wake up after I had probably one of the most stressful evening of my life, and it was just after my ears had recovered from the trauma of the airplane. The stress was related to my job, I'm an entrepreneur and my last 5 years have been extremely stressful setting up and launching a new company, and I remember saying that night, before waking up the next morning with T, that I had reached the apex moment of stress and anxiety I've ever had. It was really stressful (I had a very strong discussion with one of my investors, after a couple years of tension with the board which led me to very difficult moments). Curiously enough I woke up the next day with this ringing, which hasn't stopped since.
So what triggered the T in my experience was the stress.
I hadn't associated the two things until a while after, and when I realised this connection I started to work on myself. I changed my diet, eliminating harmful substances (sugars, processed food, cocktails - I still drink wine occasionally, but overall I eat very healthy, which also led me to lose 11kg and make me feel very good with myself), and worked on my stress levels by learning how to relax myself, take my life in a more easy way, learning a couple of breathing techniques. I also do very hot showers in the morning, letting water fall on my head and neck for 10 minutes, and this relaxes me a lot (the hot shower alone probably reduces my T buy a lot, depending on the overall stress levels in that period). In order to forget the slight depression that my T might cause I always remind myself how lucky I am to not have had a more serious thing happen to me. I walk on my legs, use my both arms, talk, see, still hear well, I'm healthy. This helps me put things into perspective and this relevies my stress by a lot.
After a while, let's say 6 months after I began all of the above my tinnitus started to reduce a lot, to a point that most days I don't even hear it anymore, unless I cover my ear and try to find it. It comes back in the evening after a stressful day at work, but if the day was good, and I've eaten properly, and haven't worried too much, the sound is very low.
Watching this video confirms this. It's not only the damage in the ear but the stress. I'm sure that once I resolve all of the anxiety with my work it will go away, or at least it will be dealt by my brain in such a way that I won't hear it anymore.
I'm positive, and this positivity also helps reduce the T.