@mick1987 reading through this thread, I think you're doing yourself more harm from panicking than anything else. Take a deep breath and start taking some concrete steps to help yourself feel better rather than thinking the same negative, self-defeating thoughts over and over. My t is noise-induced as well and I have struggled with guilt, but blaming yourself does nothing.
I agree with
@seal, drinking that much that frequently is definitely not good for your health, but do not use it as another thing to blame yourself for, just wean yourself off the alcohol in a healthy way and start leading a lifestyle that is more respectful of your body. It sounds like you have a lot of anxiety - I have to deal with that too, I would very highly recommend finding a good, understanding psychiatrist to help you with sleep/anxiety meds and perhaps also to help you keep on track with detoxing from the alcohol. Tinnitus is difficult and lonely at times, it helps just to have someone looking out for your as much as anyone can. Take the time to find a good doctor, don't just accept the first one you find. In a good relationship, this person will be with you for the long-haul.
Also, mick, I would not be so quick to say the car hood/bonnet was what gave you this spike, especially if you had a viral infection! Viral infections all by themselves can give people tinnitus (and that full ear feeling). Do not hang on every word your ENT feeds you, he really has no idea. He's just saying something because you walked into his office asking for answers.
Don't blame yourself for everything - just be kinder to yourself moving forward. If you're doing something that's not good for your overall health, then it's not good for your ears either, they're connected to your whole body. That doesn't mean you can't have a beer now and then, but I wouldn't look at this as an experiment for 6 - 8 weeks to see if not drinking helps, it's an opportunity to start taking care of yourself. It might take some serious time for your body to heal, but it wont be able to go in that direction if you're hampering your systems with toxic substances on a daily basis.
Again, I don't really think the daily drinking has necessarily gotten you here, and I really don't think it's the car hood, but I think you will feel better and give your ears their best chance to heal in the long run if you get on a long-term healthy track that's monitored and guided by a great psychiatrist.
Things can get better, Mick! We're here for you. Let us know how it goes!