The best therapy for living with it is being tough. That means accepting it and moving forward with life. Mute or avoid all loud sound as much as possible or it flares and becomes worse. I simply have no other wisdom on it for you.
I've lived with it for my whole life, and I've accepted that it likely won't be fixed.
But if you've had it, you know it can also be HELL at times. Trying to sleep while hearing loud, incessant ringing can be impossible. Being unable to pay attention to a conversation or movie because it's so loud. Never hearing true silence when you just want to decompress. Fear that it will get worse or you'll lose hearing completely.
Sometimes it's not bad. Other times it feels like water torture. It's technically harmless but the sensation can make it difficult to even stay sane.