It sounds like your tinnitus has had a very significant impact on your life, including your home life, work, and sense of well-being. Fortunately, it sounds like things have started to improve. I don't really have much clinical expertise in treating tinnitus in my own pain management practice, but I was able to read some scientific information about your situation that has been published.
First of all, researchers who have studied this seem to think that a chronic tinnitus problem can be similar to a chronic pain problem, especially one that affects the central nervous system. Events or injuries that can trigger chronic can also potentially trigger chronic tinnitus. As you have experienced and shared with us, this can be associated with quite a bit of distress. You found yourself getting very irritable, and researchers have noted the presence of things like anxiety, depression, and insomnia in cases of bad tinnitus.
Treatments may vary depending on some of the causes of the problem. Consulting with an audiologist and possibly a neurologist may provide added information about your particular situation that could help guide therapy. It also seems that specialists recommend a multi-modal approach, meaning working with different types of treatments as opposed to just one. For example, one paper published recommended treating the mood changes with psychological counseling, and found that by improving things like depression that the tinnitus actually improved, as well.
I think it could be worth looking into what ways you can expand your approach to managing this significant problem by talking to some other specialists to see how they can help you improve your overall situation.