If your tinnitus is getting you down you should instead focus on what's great about your life. Write a list of everything you love, enjoy doing, or are happy you are involved in. This will perk up your spirits and help you to get over the misery tinnitus can bring.
Sit down and take stock of your lifestyle - are there any situations that are causing you stress? How can you manage them? The less stress you have, the less severe the symptoms of tinnitus will be for you, so figure out some coping mechanisms and start employing relaxation techniques.
There are many causes for tinnitus, and figuring out what is causing yours can be very challenging. Check with a few doctors and then try to figure out tinnitus treatments that will minimize your symptoms. Educate yourself on this condition and how it can impact your life. Once you have your symptoms under control, you can look again for the cause.