I got mine in my 30's too. The first week I thought I was going crazy, and this was the end of my life. I was shocked, I couldn't go to work for a whole week.
I then saw a doctor who said to me: "Man, I've got tinnitus since 20 years and I barely hear it anymore. The more you accept it, the more it'll fade."
A decade later, my own experience is exactly this. I accepted it as one of the body malfunctions that comes with age for everybody. I barely hear it anymore except in extremely low noise situations and it doesn't bother me at all.
I wish you well.