I have had Tinnitus fir over 30yrs and have no idea what caused it. It has got louder as I have aged, I am 75 and I have lost most of my HF hearing. I was tested and tried out hearing aids fir a month, but found they made me more aware of my Tinnitus because I was hearing noises I had not heard for a long time. I was teally looking forward to hear a bird sing but found it was just a squeak that was muddled with my T and I spent my time trying to differentiate between the sounds. I should explain my T although very loud, I have had no major problems ignoring it except when talking about it. I do sympathise though with people Who find it puts stress all the time, and I am not sure you can teach someone how to ignore it except when there is no external noise when you can mask it somewhat. I am not asking for help because I feel I have it under control but it is very interesting reading all the different posts.
By the way I used to sail and still find the sound of the sea and wind very soothing.
Cheers Pete