Welcome to the forum. Glynis has given you great advice. I will add that if you haven't tried these below perhaps give them some consideration.
Helping the ears and hearing with supplements:
Members here often recommend some good supplements, such as NAC, Magnesium, Zinc, B12, D3, etc.
Diet or life style change:
Members often advice reducing intake of salt, sugar, MSG, caffeine, alcohol etc. and perhaps do some relaxing exercises or hobbies to ease the stress and anxiety from T.
Helping sleep and calming the nerves:
Sleep deprivation is one sure way to fire up T. Get some bed time masking such as a sound machine or a sound pillow to help fall asleep better. Also, instead of sleep or anti-anxiety meds from the doctor, you can try natural alternatives such as Catnip, Valerian, Hops, Passion Flower, Lemon Balm, Chamomile, Lavender, Kava, Melatonin etc. You can google search each of them to know their use and see if you can take them as a supplement. Check out this site on using natural herbs for sleep problem:
http://www.christopherhobbs.com/lib...ealth/herbs-and-natural-remedies-for-insomnia/
Sorry about losing your wife. I have lost my 5-year old son so I know what it is like to lose someone so dear. Grief has been known as a cause of or a factor of aggravating T. Try your very best to move on as our deceased loved ones don't want their departure to cause so much suffering to us. They are in a better place and will rest in peace to see us able to move on with our life again. God bless and comfort you in time of need.
Here are a few good sites with excellent sounds for sound therapy that Glynis mentions above:
TT's audio player:
https://www.tinnitustalk.com/audioplayer/
or this online sound library, particularly the self-mix nature sounds:
http://mynoise.net/
or download free sound generator 'aire freshener':
http://www.peterhirschberg.com/mysoftware.html
or search youtube with words like 'tinnitus masking sounds', 'white noise', 'rain sound' etc