I too am having suicidal thoughts at the moment, not because of my T, which is luckily mild, but I also have chronic pelvic pain or Prostatitis, and spine/back issues, all at the age of 25, just when I had my whole life ahead of me, these things happened to me in the space of 2 months last summer when I was travelling in Southeast Asia.
so I completely know what is going through your head at the moment, I have no idea how loud your T is and it must be awful to have loud T 24/7. For me its the thought of living with pain and discomfort for the rest of my life that makes me feel depressed, then the depression makes me have suicidal thoughts, is life really worth living if your in pain and discomfort, or in your case, have loud T, well it could be, my passion is travelling, and even with my heath issues, travel still makes me happy, food and friends still make me happy, who knows, maybe some miracle will happen and my health issues will be fixed, who knows, maybe your T will go down in volume ?
I'd say give it more time, eat healthy, lots of fruits, vegetables, maybe go vegan or vegetarian, food is medicine and maybe it will lower your T in time, look for foods high in Antioxidants, search about foods or supplements have help or repair Nerves. Healthy food can improve mood too. exercise, get the blood flowing, YouTube search John Bergman Tinnitus, he has some good tips. Have you tried Acupuncture, just try everything, you never know what can happen
Find a hobby, travel maybe ? if your gonna end your life, why not do something crazy first like just buy a backpack, pack your stuff and walk, just walk, hitchhike, meet people, talk, laugh, try to have fun, things will happen, new opportunities will come, look on the website couchsurfing, free accommodation to save money.
If I truly will kill myself, or plan to, I think I would just back my bag and walk/travel first, it could be a life saver ...but I don't know your age, financial situation, I know your an attractive female so its a little scarier for you but I've met so many female traveller's.
Good Luck, if you need someone to chat to just send me a message